Sand dunes and dry ice on Mars

Time for some more sightseeing on Mars. A recent news release from Mars Reconnaissance Orbiter noted the discovery of seasonal avalanches on Mars. This new image of the northern martian sand dunes illustrate again how the surface of Mars changes seasonally. The white patches on the ridges of the sand dunes is frozen carbon dioxide, dry ice that condenses on the crowns of the dunes every winter. When spring comes, the dry ice evaporates, and as it does so it disturbs the underlying sand, which then tumbles down the sides of the dunes, producing the dark streaks.

Ice-capped sand dunes

The process is less dramatic, however, than the avalanches seen in the previous news release, as suggested by this image below, showing the same dunes in summer without the dry ice. The dark streaks in the second image are not significantly different from the first, indicating that the process that forms them is slow and subtle.

Sand dunes with ice-cap

Remembering Boris Yeltsin

A monument to Boris Yeltsin was unveiled today in his hometown on the 80th anniversary of his birth.

In this week of memorials to American space tragedies, this event in Russia brings to mind the far more important and significant events, affecting millions of people worldwide, that unfolded in the Soviet Union during the late 1980s and mid-1990s. The communist superpower was collapsing, and there was the real possibility that that collapse could lead to worldwide war and violence.

Yeltsin, far more than any other man, helped shepherd the former Soviet Union out of that chaos, and he did it as a civilized man, with relatively little bloodshed. As he shouted defiantly as he stood on a tank in front of the Russian parliament building on the day of the August coup, “Terror and dictatorship . . . must not be allowed to bring eternal night!”

Unlike many former communist leaders, Yeltsin had the openness of mind to recognize that the state-run centralized command society that he had grown up in and had helped run for years simply did not work. “We have oppressed the human spirit,” he noted sadly during a press conference shortly after the coup. More importantly, he also had the courage to take action on this realization, and force the painful changes that were necessary to save his country.

Yeltsin was no saint, and the Russian transition from dictatorship to freedom was far from perfect. No one even knows if that transition is going to hold, today, twenty years later. Nonetheless, the world should remember Yeltsin for his success, and honor that memory.

Planned Parenthood caught on tape covering up underage sex trafficking

A video sting operation has caught a Planned Parenthood official as she gladly helps a pimp illegally cover up his underage sex ring. Key quote:

In the video, the pair visit Planned Parenthood Central New Jersey’s abortion center in Perth Amboy and clinic manager Amy Woodruff, an LPN, warns the pimp and his prostitute to have their trafficked underage girls lie about their age to avoid mandatory reporting laws.

“Even if they lie, just say, ‘Oh he’s the same age as me, 15,’…it’s just that mainly 14 and under we have to, doesn’t matter if their partner’s the same age, younger, whatever, 14 and under we have to report,” Woodruff says. “Like on the paperwork there’s going to be a point that asks, uh, like are you sexually active, stuff like that … if they’re under a certain age… – you know, me and my other counselor, like for the most part we want as little information as possible – cause we don’t want to be involved…”

Watch the whole video. Your jaw will drop in horror, especially consider how much government money Planned Parenthood gets (more than $300 million per year).

Challenger, 25 years later

Today is the 25th anniversary of the Challenger accident. There are innumerable links from many sources talking about the event, too many for me to list here. You can find most at this link on Jeff Foust’s website, spacetoday.net.

Though I think it is very important for us to remember and honor these events, I have become somewhat disenchanted with the modern American obsession with memorials and anniversaries. Rather than build a memorial, I’d much rather we focused entirely on building new spaceships, new space stations, and new lunar bases, while flying multi-year missions on ISS, all in preparation for exploring and colonizing the solar system.

If we actually made the solar system a place for humans to live in and explore, we would build a far better memorial to those who have sacrificed their lives for the sake of exploration. And I think these heroes would be far more pleased by that memorial than by a stone statue or emotional op-ed that describes their courage.

I’m back

As you can see, I am finally back at the computer.

I want to thank everyone who made encouraging comments or sent me private emails. The situation was a simple one: For a variety of reasons, we needed to move my 93-year-old mother to a new residence. I therefore spent the last five days packing and unpacking boxes, and guiding the movers as they transported her stuff either to her new home or storage.

Moving for anyone is always a pain in the neck. Doing it for someone else can be harder, as you have to make decisions about someone else’s possessions, about what can go and what must be discarded. Fortunately, everything worked out far better than I could have expected and she is now safely settled in a far better place.

So, back we go to space, history, science, and politics!

Journalistic spin for the sake of disaster

The headline from this National Geographic story reads “Yellowstone Has Bulged as Magma Pocket Swells,” while the first sentence is designed to send chills up your spine:

Yellowstone National Park’s supervolcano just took a deep “breath,” causing miles of ground to rise dramatically, scientists report.

From here, the next few paragraphs go on to talk about the wild rise of the giant caldara under Yellowstone National Park in recent years, and how past eruptions there were were among the most powerful volcanic explosions ever to occur. Obviously, from this introduction, the thing is about to blow and we better run for cover!

This story is unfortunately typical for much of today’s modern media: find a story with a hint of disaster in it and play up that disaster as much as possible, regardless of the facts. For example, the opening of this article completely misreports the substance of the Yellowstone geology research. Back on December 4, I read the paper and headlined its results as follows: “Yellowstone caldara rise has slowed.” What the scientists had actually found was that after a period of significant growth beginning in 2004, the rise of Yellowstone’s giant volcanic caldara had slowed significantly since 2006, and since 2008 had actually subsided somewhat.

While the significant rise from 2004 to 2006 was then news, suggesting the worrisome possibility that an eruption was imminent, the story now, revealed by this scientific research, was how that rise has stopped, and why.

Now, if you spend the time to read the rest of the National Geographic article above, you will find that the reporter does dig a bit deeper, and notes these facts in better detail. The trouble is that a quick scan of the headline and opening paragraphs will instead leave you with an entirely incorrect impression of the facts.

That this kind of fear-mongering by modern reporters is not unusual, especially when it comes to climate research and extreme weather events, illustrates the vital importance of maintaining as skeptical an eye to what we read as possible. Don’t assume what you read is true. Read it as carefully as possible. Try to check its sources. And compare every article’s conclusions with other reports to see if you can get a feel for the truth, hidden behind the different reports.

And that, by the way, applies as much to what you read here at behindtheblack as anywhere else!

The solar maximum keep shrinking

Solar scientists at the Marshall Space Flight Center have once again revised downward their prediction for the intensity of the next solar maximum. Key quote:

Current prediction for the next sunspot cycle maximum gives a smoothed sunspot number maximum of about 59 in June/July of 2013. We are currently two years into Cycle 24 and the predicted size continues to fall.

If this prediction holds, the upcoming solar maximum could be the lowest since the cycle came back to life in around 1715 following the Maunder Minimum.

the solar cycle

The future Nemesis from space

From the American Astronomical Society meeting this week:

A team of astronomers, using the data from the Sloan Digital Sky Survey, calculated the galactic orbits of nearly 40,000 low mass stars. These stars are generally M dwarfs, cool, not very bright, and thus generally somewhat close to the Sun since if they are too far away we would not see them. You can read the abstract here, and download their full poster here [pdf].

For the astronomers, the data told them a great deal about the orbital properties of these stars. Though a majority are in circular orbits between 20 to 30 thousand light years from the galactic center, a small minority are in extremely eccentric orbits that travel far out into the galactic halo, as much 260,000 light years. A few others dive inward, getting within 6000 light years of the galactic center.

What made this poster stand out to me, however, was this quote from the abstract:

In addition, we have identified a number of stars that will pass very close to the Sun within the next [billion years]. These stars form the “Nemesis” family of orbits. Potential encounters with these stars could have a significant impact on orbits of Oort Cloud and Kuiper Belt members as well as the planets. We comment on the probability of a catastrophic encounter within the next [billion years].

All told, they found that 18 low-mass cool M dwarf stars that will eventually pass close to the Sun. One star, SDSS J112612.07+152517.6, an M3 star that is about 2,300 light years away, is in an orbit that has it moving right towards us at about 90,000 miles per hour. Its mass is less than half that of the Sun, about 0.4 solar masses. This figure from the poster roughly illustrates the star’s position relative to our solar system over the next billion years:

Nemesis star

The star itself is shown in the inset. The red curve shows its calculated distance from the Sun over time, with the black area above and below showing the uncertainties of the calculation. As you can see, every hundred million years or so the distance between this star and the Sun shrinks, with the very very very rare possibility that the distance will sometimes shrink to zero!

With 18 stars each doing this every few 100 million years or so, the average time between close approaches is about 5 million years. These results suggest that another star passes close enough to our solar system frequently enough to not only disturb the comets in the Oort cloud, but also possibly affect the orbits of the planets in the outer solar system and Kuiper belt. One wonders, for example, if such an event had some influence on Pluto’s strange orbit.

Bad news for NASA, good news for private space

Earlier this week NASA submitted a report to Congress reviewing the design and construction status of the heavy-lift rocket and manned capsule that Congress has required them to build and launch by 2016. NASA’s conclusion: the space agency doesn’t think it can do the job in the schedule or budget that Congress has provided.

NASA does not believe this goal is achievable based on a combination of the current funding profile estimate, traditional approaches to acquisitions and currently considered vehicle architectures. . . . We will not commit to a date that has a low probability of being achieved.

NASA’s conclusions here are not surprising. The agency had been having trouble building Constellation on the much bigger budget and longer schedule given to them by past Congresses. For them to build the-program-formerly-called-Constellation for less money and in less time is probably impossible.

Nonetheless, this was the response of the Senate Commerce committee:

The production of a heavy-lift rocket and capsule is not optional. It’s the law.

This is why I have been saying that the money for this program is nothing more than pork. Congress knows that nothing can be built on this budget, but wants the money spent nonetheless, to keep people employed in their districts.

Meanwhile, in sharp contrast, Space Adventures yesterday announced a new deal with Russia, whereby the Russians have agreed to build and launch one extra Soyuz capsule per year, beginning in 2013, to fly 3 tourists to ISS. In addition, there is this report today about how SpaceX is successfully meeting all its milestones in building its cargo ferry for ISS. An earlier report last week also noted how Orbital Sciences is also moving forward with its cargo ferry, with a planned first test launch by the end of 2011.

All in all, this news is not good news for NASA. The space agency’s manned spaceflight program appears to have two futures, neither of which will involve it continuing to build rockets or fly humans into space. In one option, the new Congress, when it finally sits down to write a budget, will decide that pork and happy constituents are more important than a balanced budget, and will appropriate the money for the-program-formerly-called-Constellation. NASA will struggle hard to build it, but will not succeed. Thus, no government-built manned space program.

In the second option, Congress will agree with me and decide that it just doesn’t have money for pork, especially considering the terrible state of the federal budget. Moreover, seeing the success of the private efforts of SpaceX, Orbital Sciences, and Space Adventures, Congress will wonder why it needs to pour more billions into a vain effort by NASA to build something it can’t, when there are other private companies that can do it, and do it for less. In this circumstance, it will be very easy for them to cut the-program-formerly-called-Constellation. Once again, no NASA manned program.

Neither scenario is actually a bad thing. What we are actually seeing play out here is the free competition of different companies attempting to provide a service to a customer, and the customer eventually picking the best company from which to buy the product. NASA, as a government agency, simply can’t compete, and unless Congress decides to provide them welfare, will lose this competition hands down.

The U.S. will still have the capability of getting into space, but for far less money. And having multiple private companies competing to provide this service will also encourage innovation, something the rocket industry has sorely needed these past five decades.

Giant black holes

From the AAS meeting, the black hole press conference!

  • Scientists, using the Gemini telescope at Mauna Kea in Hawaii, have measured the mass of the supermassive black hole in the center of the galaxy M87, and found its mass equals 6.6 billion suns, far larger than expected. They also estimate that the event horizon of this gigantic black hole is so large our entire solar system would fit inside it.
  • Other scientists have found that the total mass of M87 is more than 5 trillion suns, about 60 percent higher than earlier investigations estimated. This makes M87 one of the most massive galaxies known. In addition, more than 80 percent of that mass is contained with the galaxy’s dark matter halo.
  • In other research, astronomers have located 16 close binary pairs of supermassive black holes hidden in the nuclei of the galaxies. Scientists have long believed that the merger of smaller orbiting supermassive black holes helps form bigger supermassive black holes we see, but until this discovery, almost no close binary pairs had been located. Of these 16 binaries, all show signs that they are spiraling into towards each other, and will crash together in several millions of years.

The uncertainty of astronomical science

From today’s first press conference at the AAS meeting, astronomers have found that two of the fundamental objects they use as units of measure might not be as reliable a unit of measure as they thought.

  • Astronomers have discovered that the Cepheid variable stars that they use to estimate the distances to the nearest galaxies are not necessarily the stars they thought. At least two Cepheids, which are variable stars, do not pulse reliably (one actually stopped pulsing entirely). Another is surrounded by a previously unknown nebula cloud, which affects its apparent brightness, an essential data-point when using these stars as a measuring tool. Here’s one press release.
  • The Crab Nebula threw out some gigantic gamma ray bursts last fall. In addition, astronomers have found that the nebula actually flickers wildly, and is also changing in gamma ray energy output over the long term, declining by seven percent in the last two years. No one yet knows what exactly causes these different variations. Like Cepheids, the Crab has been used as a standard for measuring the energy of astronomical gamma ray objects. This is no longer reliable. Here’s one press release, plus images.

It’s time the left toned down its rhetoric

Look, I agree that we’ve got to tone down the rhetoric. And I also agree that conservatives bear as much responsibility to do this as anyone. Free debate in a civilized society requires reasoned discussion of the issues, and a willingness to tolerate disagreement. It should not include ad hominen attacks, or the wishful desire to murder your opponents.

However, it is not the tone of rightwing discourse that worries me much these days. You would be hard pressed to find any examples of any Republicans or Tea Party activists suggesting it would a good thing to kill Democrats. Such suggestions are not only considered unacceptable, everyone on the right knows that to say such a thing would probably destroy your career in the public arena. Thus, it just doesn’t happen.

Instead, it is the left, the press, and the Democratic Party’s efforts to whip up anger at the right that scares me. Nor did this ugly behavior begin on Saturday after the Tucson murders. In the past decade there have been the numerous examples (which I have been documenting these past few days) of leftwing activists, Hollywood movies, talk radio hosts, and Democratic officials advocating violence against the right. (For a talk radio host example, see this new list of liberals calling for the murder of conservatives.) Worse, such behavior has almost become routine in recent years. It seems that every random violent act has become a vehicle for the left and the press to attack and slander conservatives, despite the fact that there is no evidence that any of these accusations are true.

This behavior must stop. Violent and angry rhetoric can and will cause violence. And it probably has, considering the fact that a large number of the random violent acts in recent years have actually been committed by deranged individuals with liberal, not conservative, leanings. This is not to say that I blame the left for this violence, but that the left has as much of a responsibility as the right to think carefully about what it says, before it says it. Otherwise, they might find that they have made their less rational followers more angry than they ever imagined, or can control.

Or as Michael York says to his NAZI friend at the end of this scene from the 1972 movie, Cabaret. “You still think you can control them?”

New results from the Sloan Digital Sky Survey

From the second press conference at the AAS meeting today, results from the Sloan Digital Sky Survey, which has been surveying the sky in incredible detail over the past eleven years:

  • The largest digital color image of the heavens, covering one third of the sky, imaging a half a billion stars and galaxies. Despite looking the sky in wide-field view, the data also has incredible close-up detail. This has and will continue to provide astronomers a precise baseline reference for future research.
  • A 3D reconstruction of the local galactic neighborhood, showing the three dimensional position of the visible galaxies within a billion light years. They plan to use the new Sloan color image above to further extend this 3D reconstruction out to seven billion light years.
  • The largest map of the Milky Way’s outer regions, showing the streams of stars captured from other galaxies, absorbed in the past galactic mergers that formed the Milky Way.

All this data will be available for anyone to dig around in.

New discoveries by Planck

From the first press conference at the AAS meeting today, focused on recent discoveries from the European space telescope Planck:

  • has identified 10,000 cold spots in Milky Way, all believed to be places where stars will soon begin to form. They range widely in size, and are from 30 to 10,000 light years from us.
  • Planck’s all sky survey has found 189 giant galaxy clusters, 20 of which are newly discovered. “The largest gravitationally bound objects in the universe.” Very hot, filled with hot gas.

Kepler’s most recent discovery: A rocky Earthlike planet!

Bumped. Scroll down for updates!

From the abstract of Geoffrey Marcy’s talk today at 6:30 pm (Eastern) at this week’s meeting in Seattle of the American Astronomical Society:

The NASA Kepler Mission has discovered over 700 candidate planets, with most having diameters less than 5 times that of Earth and some as small as that of Earth. One planet has a radius, mass, and density in a new domain having no counterpart in our Solar System, opening a new chapter in planetary science. [emphasis mine]

A press conference is scheduled for 11 am (Eastern). Stay tuned!

Update I. A NASA press release just made public says that Kepler has discovered a rocky planet only 1.4 times the size of the Earth.

Kepler 10b [is] a rocky planet with a mass 4.6 times that of Earth and with an average density of 8.8 grams per cubic centimeter — similar to that of an iron dumbbell.

The press conference is ongoing, but the Kepler results are still to come.

Update II. The star the planet orbits, Kepler 10, is similar to our Sun in mass and size, but older, about 8 billion years old, and is 560 light years away. Kepler 10 is also a relatively bright star in the Kepler field of view, about 11 magnitude.

The planet’s orbit itself is only 8.4 days long. Its density, 8.8 grams per cubic centimeter, is 8.8 times greater than Earth’s. This data, based on all planet models, also suggests that the planet should be a rocky planet like the Earth, though heavier and larger with a surface gravity twice that of Earth.

Since the planet orbits so close to its sun, it is a scorched world, very hot. The scientists expect that it has no atmosphere. It is also probably tidally locked, with one side always facing its Sun.

Update III: Geoffrey Marcy, one of the world’s premier exoplanet scientists, is now commenting on these Kepler results, saying he considers this discovery “among the most profound discoveries in human history.”

Update IV: In answer to a press question, the scientists speculated that the planet might have formed as a gas giant farther from the star, then migrated inward and had its gas atmosphere stripped away. No one knows yet if this is true however.

Studies of further transits might learn more about the planet, such as the temperatures between its two hemispheres. As the planet orbits the star and its illuminated side comes into view, they can see the change in temperature and thus track it. Right now they think the sunlight side could be as hot as 2500 degrees Fahrenheit.

If you want to watch the press conference for yourself, they will be posting the video here.

The Tucson shootings

Here are two links that I think are worth reading in connection with the aftermath of yesterday’s tragic shootings in Tucson:

Two sicknesses on display in Arizona.

Disgusting partisanship on display after shooting.

Above all, these murders are horrible and a terrible tragedy. For anyone from either party to try to make political gain from them is beyond despicable.

I should also note that, unlike most Islamic terrorists attacks where either no one in the Muslim community protests while many Muslim leaders express joy or agreement with the violence, I can find no one who is happy about yesterday’s murders. The general response from across the American political spectrum is horror and agony. Such things are wrong and should not happen. It is this distinction that separates Western culture from modern Islam. Until the Islamic community finally stands up to its medieval bullies, I will continue to consider it a threat to civilization and freedom.

Imaging the ground under the Greenland ice sheet

In a paper published today in Geophysical Research Letters of the American Geophysical Union, scientists describe how they have been able to produce remarkably detailed images of the ground buried almost a mile under the ice sheet of Greenland. These radar techniques are the same used in the past by spacecraft to image the hidden surface of Venus, only far more sophisticated.

The grooves on the surface of Greenland

This image from the paper compares the radar image of the Greenland surface (on the left) to an photograph of a known surface feature in the Northwest Territories of Canada, produced thousands of years ago by the giant icesheets of the last Ice Age. Both are at the same scale, about a third of a mile across, and are looking at the surface at an oblique angle of about 45 degrees. With the radar-produced image on the left, sunlight is simulated as coming from the right, with the elevation increasing as the colors go from green (lowest) to yellow to brown to purple (highest).

The long grooves, generally 30 to 100 feet deep and extending sometimes several miles, are produced as the icesheet slides across the ground. In the radar image, however, these grooves are slowly being ground out now.

It is the resolution of this technique that is so exciting. That they can look through ice almost a mile thick and resolve objects that are only tens of feet across tells me that someday it will be possible for spacecraft to map the smallest features on the surface of Venus or Titan. More exciting, this suggests that the technology will one day exist to even map the unknown surface of gas giants like Jupiter or Saturn, and do it in breathtaking detail.

Yowza!

Peer-reviewed journal article a “Fraud”

Back in 1998 a peer-reviewed paper in the medical journal, Lancet, claimed that the childhood vaccinations for measles, mumps and rubella vaccine could be linked to autism and other health problems. The consequence was that thousands of parents withheld vaccinations from their children, resulting in an outburst of measles that almost certainly did actual harm to many children.

This paper has now been shown to be an outright fraud.

This story raises two thoughts. First, it demonstrates clearly that just because a research paper is published in a “peer-reviewed” science journal is no guarantee that the paper will be honest, reliable, or factually accurate. As good scientists like to say, “Extraordinary results require extraordinary evidence.” Both the press and public need to be constantly skeptical about all research, regardless of where it is published.

Secondly, the reaction of the journal, Lancet, to this whole affair suggests strongly that this particular journal is even more unreliable than most. To quote:

The Lancet withdrew the article in January of last year after concluding that “several elements” of the paper were incorrect. But the journal didn’t describe any of the discrepancies as fraud.

The journal’s reaction is similar to what we saw with the climategate emails, an effort to whitewash the situation while refusing to face the problem bluntly and fix it. If the article was as fraudulent as the Wall Street Journal article above suggests, it raises serious questions about the editorial policies at Lancet. That the editors there seem uninterested in addressing these concerns acts to discredit their publication entirely. And until they deal with this issue properly, I would look very skeptically on anything they publish.

(Note that this is not the first time Lancet has published research of questionable reliability. See this story for another example.)

Charles Bolden has come out of hiding

Today NASA administrator Charles Bolden spoke at the AIAA meeting in Orlando. According to Florida Today, he said two things of interest:

  • He is proud of the achievements of the shuttle program and is sad the program is ending.
  • He believes flying three more shuttle missions would be safe.

Considering that his administration has done nothing to save the program, and in fact has almost seemed eager to shut it down at times, his sadness seems incredibly insincere and self-serving.

As for his second comment about the shuttle’s safety, I wonder how he knows this, especially since his own engineers are currently struggling to pin down the root cause of the external tank cracks that have delayed the last flight of Discovery, and appear to be a chronic problem that needs to be fixed before any shuttle can once again fly.

Opportunity at Santa Maria Crater, as seen from space

The image below was taken by Mars Reconnaissance Orbiter on New Year’s Eve. It shows the rover Opportunity on the rim of stadium-sized Santa Maria Crater, where scientists plan to spend the next two months exploring the crater.

Opportunity has truly been an astonishing success for NASA’s planetary science program. The rover has operated on the Martian surface since 2004, almost seven years beyond its original mission length. It is presently about halfway on its long journey to the much larger Endeavour Crater (14 miles in diameter), still several miles away.

Opportunity at Santa Maria

A plunge in solar activity in December

The monthly update of the Sun’s developing sunspot cycle was published tonight by NOAA’s Space Weather Prediction Center. You can see the newest graph below, which shows the slow rise in sunspots (blue/black lines) in comparison with the consensis prediction made by the solar science community in May 2009 (red line).

Not only does the Sun’s generally quiet trend continue, its activity took an additional plunge in December, dropping significantly from the previous month. This drop is probably due to the seven days of no sunspots that took place in mid-December.

All in all, we continue to head for the weakest maximum in two hundred years (see the graph on this page), which in the past meant very cold weather. Though scientists do not yet understand why the Sun does this or how these changes in solar activity influence the climate as much as they do, that this in now happening at a time when we have the technology to truly study it is an opportunity that must not be missed.

The December sunspot graph

Naked bodies and a new Messiah

If anyone had any doubt that the global warming movement is undergoing a serious collapse, this so-called news article from Spiegal Online, entitled “Naked bodies and a new Messiah: Green groups are trying to sex up climate change,” probably lays that doubt to rest. Key quote:

Environmentalists and scientists are concerned about the massive drop in public interest in the topic over the last year. Now they are looking for new strategies to turn the tide. They’re searching for so-called “mind bombs” — highly emotional images that reduce a complex problem down to one core message.

Sadly, the article never asks the fundamental question: What do “mind bombs” have to do with facts, data, and proving your theories are correct in the real world?

The answer of course is obvious: Nothing.
» Read more

The Space Show

For those who would are curious to hear me talk about the past year and what’s to come as well as celebrate the 42nd anniversary of the Christmas Eve reading of Genesis by the astronauts of Apollo 8, I will be appearing on David Livingston’s long running radio show/podcast, The Space Show, today at 9:30 am Pacific time (12:30 pm Eastern time). The interview is scheduled to last 90 minutes, but David and I usually end up going far longer.

Dr. Livingston has produced more than 1000 shows, interviewing almost every single important figure in the aerospace industry. As he noted recently:

The Space Show/One Giant Leap Foundation is a non-profit 501C3 and your contributions are deductible from your U.S. tax liability. But more important, your help is needed in getting the space message out there to as many as possible, including the movers and shakers in society and the space industry. Not only do we provide a platform for many of you and your own material, we play an increasingly larger and more important role in getting space development to go viral. However, we can’t do it without your help so if you are able to make a contribution to The Space Show/OGLF this year, not only will it be appreciated, it will be most beneficial in helping to achieve Space Show goals and objectives.

To this I heartily say, amen! If you want to find out what’s going on in the aerospace community, The Space Show is undeniably one of the best places to go. The show deserves our support, and for that reason I want to give it a enthusiastic plug. You can make contributions by Pay Pal on The Space Show website here or on the One Giant Leap Foundation website. Checks made payable to One Giant Leap Foundation, Inc. can be mailed to P.O. 95, Tiburon, CA 94920.

Opportunity takes a rest stop at a crater

In its 14 mile multi-year trek to Endeavour Crater — now about half completed — the Mars rover Opportunity has stopped to take a short rest stop at a small crater.

The crater, dubbed “Santa Maria Crater” by the scientists who operater Opportunity, is about the size of a football field. What makes it especially interesting are the sharp rocks piled up on its rim, as they are probably debris ejected from the crater at impact. Since this material probably came from deep below the Martian surface, it is also likely to hold information about the Martian geological past, thereby making it a prime research site.

Santa Maria crater

A Martian eclipse

The hubbub about this week’s lunar solstice eclipse was, from my perspective, mostly manufactured press blather. For those who had never seen a lunar eclipse, it was a spectacular experience, but there really was nothing scientifically or technically unique about the fact that it happened to occur on the solstice.

However, below is an eclipse that is definitely unique both technically and scientifically. Scientists using the Mars rover Opportunity have filmed an eclipse on Mars, showing the Martian moon Phobos crossing in front of the Sun. Consider the engineering accomplishment: not only did they need to be able to calculate exactly when this would happen at a very particular spot on the Martian surface, they had to have a camera there able to take the movie. And they had to operate it from Earth!

Avoiding the facts in the climate debate

Yesterday the New York Times published a long article by Justin Gillis describing the work of Charles Keeling, the scientist who first measured the increase in carbon dioxide in the Earth’s atmosphere. The article is very much worth reading, as it does a generally reasonable and detailed job of giving the history, background, and importance of Keeling’s research.

Unfortunately, the flaws of Gillis’s article illustrate the difficulty of debating climate change science, or maybe any political issue, in our times. Though Gillis does make an effort to give the skeptical scientists their fair due, he is so convinced they are wrong that his article in the end fails to address the basic areas of disagreement on which the entire climate debate today hinges. In fact, by avoiding some of the debate’s most basic issues, Gillis ends up creating barriers which make an honest analysis of the issues impossible.

That this seems to happen in almost all political debates today is distressing, at the least. How can we honestly face our problems if we refuse to face all the facts on which those problems hang?

Let’s consider the specific areas where Gillis’s demonstrates a large blind spot:

1. One of the fundamental facts that throws a wrench in all global warming theories is the fact, recognized by all climate scientists, that in all past global warming events, the Earth’s climate warmed before the levels of carbon dioxide rose. In other words, an increase in carbon dioxide in the atmosphere did not cause global warming. Instead, the warming encouraged the increase in carbon dioxide.

An honest appraisal of the science of climate change would always recognize this puzzling but very significant data point. Gillis, however, fails to mention it. Nor is Gillis alone in this failure. Almost all global warming advocates as well as their willing helpers in the press routinely ignore this important detail. Yet, that climate scientists can’t explain this fact is one of primary reasons many are skeptical of the disaster scenarios put forth by global warming advocates.

As I say, an honest discussion of this subject would always recognize this point.

2. As his primary evidence that the Earth is now warming from the increase of atmospheric carbon dioxide, Gillis has this to say:

In 2007, a body appointed by the United Nations declared that the scientific evidence that the earth was warming had become unequivocal, and it added that humans were almost certainly the main cause. Mr. Gore and the panel jointly won the Nobel Peace Prize.

This “body” is of course the IPCC. That Gillis is strangely reluctant to actually name this organization in his article suggests he knows its reputation is seriously damaged. Rather than face this fact and deal with it, however, he prefers to ignore it, and in the process help his readers avoid this fact as well.

Yet, the IPCC reports have known problems. They contain some fundamental factual errors, as well as citing as evidence numerous press releases from environmental advocacy groups, hardly a reliable source of information. This is not to say that the IPCC reports should be dismissed wholesale, but for Gillis to depend on them as his sole source of proof of global warming without recognizing these problems is not only inappropriate, it discredits everything he writes. It also suggests that he relies more on the prestige of the organization who issued the report, rather than the science behind it. His further reference to Al Gore and the Nobel prize is further evidence of this reliance on authority.

Once again, an honest appraisal of the present state of the global warming debate would gladly face all these facts, and describe them for the reader.

3. Gillis makes the unfortunate decision to call anyone who questions the science of global warming a “contrarian.” The use of this denigrating term, comparable to the use of the term “denier”, suggests that Gillis has a closed mind about the subject, and has no interest in finding out anything about the skeptical view.

An honest appraisal of the debate, however, would avoid these kinds of loaded terms. It is perfectly fine to note the weaknesses of the skeptical position. It is not acceptable to use ad hominem attacks to discredit them.

All in all, the three examples above encompass all of the basic problems we face in almost all our political debates today:

  • First, the refusal to face some inconvenient facts.
  • Second, the willingness to rely on authority or prestige, rather than the facts themselves.
  • And third, the willingness to use ad hominem attacks to discredit anyone who disagrees with you.

Until we stop doing these foolish things, we will find it impossible to discuss or solve our problems reasonably, and with good will.

The Sun is blank

For the first time since October 10, and only the third time since August, the Earth-facing side of the Sun is blank, showing no sunspots. All told, 2010 has only been blank 13% of the time, for a total of 46 blank days, with only 12 days left in the year. These numbers contrast sharply with 2009, when the Sun was blank 71% of the time, or 260 out of 365 days.

It is very clear that the solar minimum is now over, and that the Sun ramping up to its next maximum. Blank days should soon cease (today might very well be the last for years), and the number of sunspots should continue to increase through approximately 2013, when astronomers now expect the maximum to peak.

It will be a weak maximum, however, likely accompanied with cold weather. At least, this has been the pattern for the last ten centuries, based on the best data that scientists have. When the Sun produces sunspots, the Sun gets hotter, and though that increase in radiation appears slight, it seems enough to warm the Earth’s climate. This is what appears to have happened around the year 1000, during what climate scientists call the Medieval Warm Period.

And when the Sun goes blank, or produces fewer sunspots, the Sun dims, and the Earth’s climate cools. This is what happened in the 1600s and 1700s, when the Little Ice Age gripped much of the Earth. It also happened in the first two decades of the 1800s, the last time the Sun produced as few sunspots as it is now, and when at least one year was called “the year without a summer”. Interestingly, that cold period at the beginning of the 1800s was also a period of intense volcanic activity, which threw a lot of dust and material into the atmosphere and thus helped contribute to the cooling of the Earth.

The last half of the 20th century, however, has not seen that much volcanic activity, which has made the atmosphere today clearer than any time in the past five decades. It has also been a time of increased solar activity, with most of the solar maximums peaking at generally higher numbers. No wonder scientists have detected evidence of a slight warming in the climate.

However, that warming appears to be ending, and it is doing so at the same time the Sun is going spotless. Though we don’t yet fully understand the mechanics of how these two events are linked, it behooves us to pay close attention. No climate prediction or computer model will mean anything if it does not.

Meanwhile, solar scientists remain unclear about the causes behind the solar cycle’s ebbs and flows. They have a reasonable idea that the cycle is caused by the Sun’s magnetic dynamo as it flips from one polarity to another. But why this happens is still subject to debate.

More importantly, it remains a complete unknown how long the next sunspot minimum will be. The Sun could spring back to life, as it did in the 1850s, producing lots of sunspots. Or sunspots might fade out for a few additional decades, as they did in the 1600s.

Sadly, based on the state of our science today, this is a question that probably no one will be able to answer — until we actually see it happen.

Looking into a lunar cave

NASA engineer James Fincannon emailed me the image below, cropped from this Lunar Reconnaissance Orbiter scan. It shows a side view of the same lunar pit previously discussed by me in July (here and here).

This image below was almost certainly ordered up by LRO scientists after seeing the images above so that they could get a look at the pit’s walls. I have further cropped it and blown it up so we can get a really good look too! See the second image below.

In this side view, we are looking across the top of the pit at the far wall and floor. On that far wall you can see what look like three coarse horizontal layers, below which is a deeply shadowed floor layer that is probably either cave passage or a significant overhang. Further processing will probably be bring out some further details and hopefully answer this question.

In a previous post, I had noted that this wall is probably about 200 feet deep. This new image thus gives any experienced rock-climber or caver a very nice sense of what a rappel down the side of that pit would be like. To me, it reminds me of some of the open-air cave pits I’ve rappelled into in New Mexico.

Update: I should note that that overhang/cave entrance at the bottom of the pit is probably at least 30 feet high. An impressive entrance, indeed.

Also, lunar scientist Paul Spudis emailed me with these comments:

[The pit] is very similar to some tube systems that I have studied in Hawaii. The wall units are exposed lava flows. They are probably all from the event which made this flow — a single flow can be made up of multiple flow units, hence, the apparent “layering.”

Of course, getting into an open pit and then moving through open void lava tubes that radiate from it are two different things. In terrestrial tube systems, many tubes are open and accessible but sometimes they are not. They can be blocked up by frozen lava or rubble from adjacent tube collapse.

Unfortunately, I don’t think we’re going to know what the situation on the Moon is until we get there. However, I must say, this particular area looks very promising.

Side view of pit

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