Cats cause global warming
Bad news for climate modelers
A new analysis of the orbits of Ceres and Vesta says that in a surprisingly short time those orbits become chaotic and therefore unpredictable. More significantly, those orbits interact with the Earth’s and also make its long term orbit chaotic and unpredictable. From the abstract:
Although small, Ceres and Vesta gravitationally interact together and with the other planets of the Solar System. Because of these interactions, they are continuously pulled or pushed slightly out of their initial orbit. Calculations show that, after some time, these effects do not average out. Consequently, the bodies leave their initial orbits and, more importantly, their orbits are chaotic, meaning that we cannot predict their positions. The two bodies also have a significant probability of impacting each other, estimated at 0.2% per billion year. Last but not least, Ceres and Vesta gravitationally interact with the Earth, whose orbit also becomes unpredictable after only 60 million years. This means that the Earth’s eccentricity, which affects the large climatic variations on its surface, cannot be traced back more than 60 million years ago. This is indeed bad news for Paleoclimate studies. [emphasis mine]
The scientists found that it became impossible to calculate the orbits of the two largest asteroids after only several ten thousand years. They also found that “numerous asteroids in the main belt will behave in the same way with . . . much more chaotic behavior than previously thought.” Worse, the possibility of collisions was far higher than ever thought. Ceres and Vesta have a 1 in 500 chance of colliding with each other every billion years, while other asteroids have chances as low as 1 in 1000.
The importance of this discovery, which still needs to be confirmed by other researchers, cannot be understated.
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On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon, any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Base jumping with a wingsuit
Another fuzzy Dawn image?
Another image of Vesta from Dawn has been released. This image was taken on July 9 from a distance of 26,000 miles away. It is definitely an improvement over the previous image, with more small details becoming visible. However, I once again wonder about the softness of the image. Look at the limb of the planet. It is soft against the black sky. This is not what one would expect from perfectly focused camera.
Dawn goes into orbit around Vesta next week. We sure learn then for sure if there is a problem with its camera, or whether I am merely being a bit too nervous.
Now available in hardback and paperback as well as ebook!
From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.
“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.
All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.
Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.
Long, cramped road trips ahead for US astronauts
Being tone deaf is not a good way to fund a government space program
Yesterday the House appropriations committee’s released budget numbers that included no additional funds for commercial space, limiting the subsidies to $312 million, the same number as last year and significantly less than the $850 million requested by the Obama administration.
This is what I have thought might happen since last year. The tone deaf manner in which the Obama administration has implemented the private space subsidies is leaving all funding for NASA vulnerable.
» Read more
Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.
If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.
Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke
Astronomers have found two new brown dwarf stars only 15 and 18 light years away
Astronomers have found two new brown dwarf stars only 15 and 18 light years away.
Most brown dwarfs have reached surface temperatures below the “oven temperature” of about 500 Kelvin (about 230 degrees Celsius), may be even as cool as the temperature at the surface of the Earth. The search for these elusive neighbours of the Sun is currently in full swing. It cannot be excluded that ultracool brown dwarfs surround us in similar high numbers as stars and that our nearest known neighbour will soon be a brown dwarf rather than Proxima Centauri.
Astronomers have found two new brown dwarf stars only 15 and 18 light years away.
Most brown dwarfs have reached surface temperatures below the “oven temperature” of about 500 Kelvin (about 230 degrees Celsius), may be even as cool as the temperature at the surface of the Earth. The search for these elusive neighbours of the Sun is currently in full swing. It cannot be excluded that ultracool brown dwarfs surround us in similar high numbers as stars and that our nearest known neighbour will soon be a brown dwarf rather than Proxima Centauri.
NASA stalls, Texas lawmakers fume
The law is such an inconvenient thing: In a bipartisan effort, Texas lawmakers roast NASA administrator Charles Bolden for not meeting mandated Congressional deadlines for Congress’s personally designed rocket, the program-formerly-called-Constellation.
The heavy-lift rocket and capsule that Congress insists NASA build is a complete waste of money and nothing more than pork. It will never get built, mainly because Congress has given NASA less money and less time to build it than they did for Constellation under the Bush administration. Unfortunately, the reason they continue to require NASA to build it is to provide pork to their districts.
In a perfect world this funding would be cut now, especially considering the state of the federal debt.
» Read more
NASA awards a key piece of ISS management to Florida
NASA awards a key piece of ISS management to Florida, not Houston.
The story reports that politics were not involved, but I am suspicious. Since all ISS management and operations come out of Houston, why send some of that management to Florida?
NASA awards a key piece of ISS management to Florida, not Houston.
The story reports that politics were not involved, but I am suspicious. Since all ISS management and operations come out of Houston, why send some of that management to Florida?
Second ARTEMIS space probe about to enter lunar orbit
The second ARTEMIS space probe will enter lunar orbit on Sunday.
“With two spacecraft orbiting in opposite directions, we can acquire a full 3-D view of the structure of the magnetic fields near the moon and on the lunar surface,” said Vassilis Angelopoulos, principal investigator for the THEMIS and ARTEMIS missions and a professor of space physics at UCLA. “ARTEMIS will be doing totally new science, as well as reusing existing spacecraft to save a lot of taxpayer money.”
The second ARTEMIS space probe will enter lunar orbit on Sunday.
“With two spacecraft orbiting in opposite directions, we can acquire a full 3-D view of the structure of the magnetic fields near the moon and on the lunar surface,” said Vassilis Angelopoulos, principal investigator for the THEMIS and ARTEMIS missions and a professor of space physics at UCLA. “ARTEMIS will be doing totally new science, as well as reusing existing spacecraft to save a lot of taxpayer money.”
White dwarf stars in a dance of death
White dwarf stars in a dance of death.
[The binary pair of] white dwarfs are so near they make a complete orbit in just 13 minutes, but they are gradually slipping closer together. About 900,000 years from now – a blink of an eye in astronomical time – they will merge and possibly explode as a supernova. By watching the stars converge, scientists will test both Einstein’s general theory of relativity and the origin of some peculiar supernovae.
The two white dwarfs are circling at a bracing speed of 370 miles per second (600 km/s), or 180 times faster than the fastest jet on Earth. “I nearly fell out of my chair at the telescope when I saw one star change its speed by a staggering 750 miles per second in just a few minutes,” said Smithsonian astronomer Warren Brown, lead author of the paper reporting the find.
The brighter white dwarf contains about a quarter of the Sun’s mass compacted into a Neptune-sized ball, while its companion has more than half the mass of the Sun and is Earth-sized. A penny made of this white dwarf’s material would weigh about 1,000 pounds on Earth. Their mutual gravitational pull is so strong that it deforms the lower-mass star by three percent. If the Earth bulged by the same amount, we would have tides 120 miles high. [emphasis mine]
White dwarf stars in a dance of death.
[The binary pair of] white dwarfs are so near they make a complete orbit in just 13 minutes, but they are gradually slipping closer together. About 900,000 years from now – a blink of an eye in astronomical time – they will merge and possibly explode as a supernova. By watching the stars converge, scientists will test both Einstein’s general theory of relativity and the origin of some peculiar supernovae.
The two white dwarfs are circling at a bracing speed of 370 miles per second (600 km/s), or 180 times faster than the fastest jet on Earth. “I nearly fell out of my chair at the telescope when I saw one star change its speed by a staggering 750 miles per second in just a few minutes,” said Smithsonian astronomer Warren Brown, lead author of the paper reporting the find.
The brighter white dwarf contains about a quarter of the Sun’s mass compacted into a Neptune-sized ball, while its companion has more than half the mass of the Sun and is Earth-sized. A penny made of this white dwarf’s material would weigh about 1,000 pounds on Earth. Their mutual gravitational pull is so strong that it deforms the lower-mass star by three percent. If the Earth bulged by the same amount, we would have tides 120 miles high. [emphasis mine]
Jailbreak
Dawn nears Vesta
I’ve posted earlier about Dawn’s approach to Vesta. However, in looking at the images from Dawn, it dawned on me recently that they seems more fuzzy for what you’d normally expect from a space probe. I am now wondering if there is something fundamentally wrong with Dawn’s camera, causing its images to be slightly out of focus.
I’ve posted earlier about Dawn’s approach to Vesta. However, in looking at the images from Dawn, it dawned on me recently that they seems more fuzzy for what you’d normally expect from a space probe. I am now wondering if there is something fundamentally wrong with Dawn’s camera, causing its images to be slightly out of focus.
SpaceX about to break ground on launchpad and hanger for Falcon Heavy
China launched second data relay satellite, expanding space communications network before first docking attempt
On Monday China successfully launched its second data relay satellite, expanding its space communications network in preparation for before its first unmanned rendezvous and docking attempt later this year.
On Monday China successfully launched its second data relay satellite, expanding its space communications network in preparation for before its first unmanned rendezvous and docking attempt later this year.
The competing extinction theories battle it out
New evidence bolsters the asteroid impact theory of dinosaur extinction 65 million years ago.
I am sure you all thought the cause of the dinosaurs’ extinction — an asteroid impact on the Yucatan peninsula — was settled science. Wrong!
» Read more
The TS&A
Arab journalists demand the blacklisting of a Israeli journalist
Arab journalists demand the blacklisting of a Israeli journalist at a journalism conference in Qatar, merely because she is from Israel.
Arab journalists demand the blacklisting of a Israeli journalist at a journalism conference in Qatar, merely because she is from Israel.
Skeleton May Help Solve Mystery of Doomed Franklin Expedition
Starvation, scurvy, or lead poisoning? A skeleton from the 1848 Franklin Expedition to the Arctic may tell scientists what caused the expedition’s destruction.
Starvation, scurvy, or lead poisoning? A skeleton from the 1848 Franklin Expedition to the Arctic may tell scientists what caused the expedition’s destruction.
House spending panel cuts John Holdren’s science office budget by 55%
The House spending panel today proposed cutting the budget of the White House Office of Science and Technology Policy (OSTP) office, run by John Holdren, by 55%.
“OSTP has chosen to disregard a strong and unambiguous legislative prohibition on bilateral engagement with China or Chinese-owned companies,” says language accompanying the 2012 bill, to be voted on tomorrow by the full appropriations committee. “OSTP’s behavior demonstrates a lack of respect for the policy and oversight roles of the Congress.”
I think the Obama administration is about to discover that ignoring the law as passed by Congress can have bad consequences.
The House spending panel today proposed cutting the budget of the White House Office of Science and Technology Policy (OSTP) office, run by John Holdren, by 55%.
“OSTP has chosen to disregard a strong and unambiguous legislative prohibition on bilateral engagement with China or Chinese-owned companies,” says language accompanying the 2012 bill, to be voted on tomorrow by the full appropriations committee. “OSTP’s behavior demonstrates a lack of respect for the policy and oversight roles of the Congress.”
I think the Obama administration is about to discover that ignoring the law as passed by Congress can have bad consequences.
Neptune Completes Its First Circuit Around The Sun Since Its Discovery
Neptune has just completed its first orbit around the sun since its discovery in 1846. And the Hubble Space Telescope has taken some pictures in celebration.
Neptune has just completed its first orbit around the sun since its discovery in 1846. And the Hubble Space Telescope has taken some pictures in celebration.
Gore Announces New Campaign and Worldwide Event to Re-energize Global Warming Hysteria
Al Gore has announced a new campaign “to broadcast the reality of the climate crisis and mobilize citizens to help solve it.”
And I ask: what the hell does a propaganda campaign tell us about the climate? The answer: nothing. Just because you say so, Al, does not make it so.
On another note, satellite data continues to show absolutely no warming for the past decade.
Al Gore has announced a new campaign “to broadcast the reality of the climate crisis and mobilize citizens to help solve it.”
And I ask: what the hell does a propaganda campaign tell us about the climate? The answer: nothing. Just because you say so, Al, does not make it so.
On another note, satellite data continues to show absolutely no warming for the past decade.
wings in space
James McLane points out that the shuttle shape is not the only way to build a spaceship.
In an email to me Jim noted that he “is still trying to save NASA.” My response to him was that trying to save NASA right now is more hopeless than Don Quixote chasing a windmill. However, the engineering ideas he outlines in his essay are just the kind of innovative thinking required by the new private companies. And the more ideas the merrier!
James McLane points out that the shuttle shape is not the only way to build a spaceship.
In an email to me Jim noted that he “is still trying to save NASA.” My response to him was that trying to save NASA right now is more hopeless than Don Quixote chasing a windmill. However, the engineering ideas he outlines in his essay are just the kind of innovative thinking required by the new private companies. And the more ideas the merrier!
Public debt and the peril of Obamacare
Public debt and the peril of Obamacare.
Countries with universal healthcare fall into two camps:
1. Totalitarian regimes like Cuba and North Korea, and authoritarian Third World countries in the Middle East and Africa.
2. Western nations that free-ride off of American military spending and its provision of international security, but nonetheless run unsustainable budgets with immense debts trying to pay for their social welfare states. [emphasis mine]
In other words, we had better repeal this monstrosity or we face economic collapse, probably preceded by a dictatorship.
Public debt and the peril of Obamacare.
Countries with universal healthcare fall into two camps:
1. Totalitarian regimes like Cuba and North Korea, and authoritarian Third World countries in the Middle East and Africa.
2. Western nations that free-ride off of American military spending and its provision of international security, but nonetheless run unsustainable budgets with immense debts trying to pay for their social welfare states. [emphasis mine]
In other words, we had better repeal this monstrosity or we face economic collapse, probably preceded by a dictatorship.
The First Rule of Liberalism: Government failure always justifies more government.
Obama administration imposes new gun regulations, NRA will sue
The law is such an inconvenient thing: The Obama administration has unilaterally imposed new gun regulations on the border states to Mexico. The NRA has announced it will sue.
The law is such an inconvenient thing: The Obama administration has unilaterally imposed new gun regulations on the border states to Mexico. The NRA has announced it will sue.
“Some of them seem to believe that the government can simply keep spending beyond its means forever with no negative consequences.”
House Budget Bill Would Leave it to NASA To Apportion Bulks of Cuts
The House bill that brings NASA’s budget back to 2008 levels essentially leaves it to NASA to figure out what to cut.
If true, what this means is that NASA itself will have to choose what it considers important. The one problem is that according to this article Congress is still requiring NASA to spend $3 billion on the program-formerly-called-Constellation. which gives the agency less flexibility in doling out the cash.
The House bill that brings NASA’s budget back to 2008 levels essentially leaves it to NASA to figure out what to cut.
If true, what this means is that NASA itself will have to choose what it considers important. The one problem is that according to this article Congress is still requiring NASA to spend $3 billion on the program-formerly-called-Constellation. which gives the agency less flexibility in doling out the cash.
Shuttle mission extended one day
First International Planetary Caves Workshop
Interested in caves on other worlds? You might want to attend the First International Planetary Caves Workshop to be held October 25-28, 2011 in Carlsbad, New Mexico.
Interested in caves on other worlds? You might want to attend the First International Planetary Caves Workshop to be held October 25-28, 2011 in Carlsbad, New Mexico.