Behind The Black – Robert Zimmerman

Chandrayaan-2 launch now scheduled for mid-April

January 11, 2019 8:50 am Robert Zimmerman

The new colonial movement: India’s Chandrayaan-2 lander/rover mission to the south pole region of the Moon has now been re-scheduled for mid-April.

The launch date had to be pushed from the initially scheduled January-February window, as a few related tests could not be completed by the Indian Space Research Organisation (Isro). Isro chairman K Sivan told the media on Friday that the next available slot is during March-April, and the launch could take place by mid-April. However, if this window is passed, the prestigious mission will have to be pushed again to June.

The article also suggests that they have made some changes to the mission’s flight plan.

Leave a comment

Want to see a panorama of Chang’e-4 landing site? You can!

January 11, 2019 8:36 am Robert Zimmerman

If you want a really good look at the Chang’e-4 landing site on the far side of the Moon — with Yutu-2 about thirty feet away — photographer Andrew Bodrov has produced a spectacular 360 degree panorama from images sent down by the lander.

This panorama reveals two things. First, the lander landed close to two small craters, which it thankfully missed. Second, there are some hills in the distance which I suspect are central peaks of Von Kármán crater. They are probably beyond Yutu-2’s range, but would make a worthwhile exploratory target.

Meanwhile, the rover and lander have come back to life after a brief hibernation to protect them from the heat of the lunar mid-day.

Finally, China has released a video showing Chang’e-4’s descent and landing, which I have embedded below the fold. In it, you can see the spacecraft computer maneuver to land between those two craters shown in the panorama.
» Read more

One comment

Making chain

January 10, 2019 6:01 pm Robert Zimmerman

An evening pause: More cool engineering. Hat tip Phill Oltmann.

3 comments

Air Force accepts first new Boeing tanker despite problems

January 10, 2019 2:23 pm Robert Zimmerman

The Air Force has accepted delivery of Boeing’s first new tanker airplane, despite problems that leaves the plane “years away from reaching their full operational potential.”

The U.S. Air Force has accepted the first Boeing KC-46A Pegasus tanker, an important milestone for the troubled program. However, the initial batch of aircraft will still have serious problems with their remote vision and refueling boom systems, meaning that the planes remain years away from reaching their full operational potential.

Foreign Policy was the first to report on the agreement between the Air Force and Boeing to proceed with the deliveries of the aircraft, citing anonymous sources, on Jan. 10, 2019. Defense News then reported that the Chicago-headquartered planemaker had agreed to fix the remaining deficiencies and that the Air Force’s top leadership reserved the right to withhold full payment for the planes – up to $1.5 billion in total if the service docks the company for each of the 52 aircraft in the first batch of planes – until it sees real progress.

…The acceptance and up-coming deliveries are a big deal for the KC-46A program, which has been mired in delays and controversy since Boeing won the Air Force’s KC-X competition in 2011. That decision itself followed nearly a decade of earlier, scandal-ridden Air Force attempts to procure a new tanker aircraft. Notably, in 2004, Darleen Druyun, a Boeing executive who had previously been the Air Force’s top procurement official, went to federal prison after receiving a conviction on corruption charges relating to an earlier tanker program.

The Air Force was supposed to have received a fleet of 18 KC-46As, the first tranche in the total initial buy of 52 aircraft, by the end of 2017 and reach an initial operational capability with the type shortly thereafter. Between 2011 and 2017, continuing technical difficulties…repeatedly pushed this schedule back. This continued into 2018, leading to an unusually public spat between the two parties over the program’s progress. Boeing’s contract is firm, fixed-price, and that company has already had to pay more than $3 billion of its own money to cover cost overruns. [emphasis mine]

Why is it that it seems to me that every single government program today is always “troubled” and “mired in delays and controversary?” Or maybe the question answers itself. These are government programs after all.

The one saving grace of this story is that the Air Force issued a fixed price contract here, so that the cost overruns fall on Boeing’s head, not the taxpayer (though Air Force errors in issuing the contract might negate this advantage). The delays however are shameful. It should not be so hard to build a tanker plane.

11 comments

Earth’s magnetic field undergoing unexpected changes

January 10, 2019 1:25 pm Robert Zimmerman

The uncertainty of science: For reasons that scientists do not understand, the Earth’s magnetic field has been undergoing unexpected shifts in the past two years, causing its north pole to move significantly and somewhat quickly from Canada across to Siberia.

Earth’s north magnetic pole has been skittering away from Canada and towards Siberia, driven by liquid iron sloshing within the planet’s core. The magnetic pole is moving so quickly that it has forced the world’s geomagnetism experts into a rare move.

On 15 January, they are set to update the World Magnetic Model, which describes the planet’s magnetic field and underlies all modern navigation, from the systems that steer ships at sea to Google Maps on smartphones.

The most recent version of the model came out in 2015 and was supposed to last until 2020 — but the magnetic field is changing so rapidly that researchers have to fix the model now. “The error is increasing all the time,” says Arnaud Chulliat, a geomagnetist at the University of Colorado Boulder and the National Oceanic and Atmospheric Administration’s (NOAA’s) National Centers for Environmental Information.

Note that they have delayed the release of the World Magnetic Model until January 30, claiming the delay is caused by the government shutdown. Seems bogus to me. As I have already noted, these scientists aren’t slaves. If they think this is so important, and they have completed their work (which the article suggests they have), they can release the model, regardless of the federal government’s funding.

Hat tip reader Stephen Taylor.

5 comments

Lopsided ejecta from Martian crater

January 10, 2019 12:14 pm Robert Zimmerman

Cool image time! The image on the right, reduced and cropped to post here, comes from the December image release from the high resolution camera of Mars Reconnaissance Orbiter (MRO). (If you click on the image you can see the full resolution uncropped photograph.) Released without a caption, the release itself is intriguingly entitled, “Crater with Preferential Ejecta Distribution on Possible Glacial Unit.

The uneven distribution of ejecta material around the crater is obvious. For some reason, the ground was preferentially disturbed to the north by the impact. Moreover, the entire crater and its surrounding terrain look like the impact occurred in a place that was saturated somewhat with liquid, making the ground soft like mud.

That there might have been liquid or damp material here when this impact occurred is reinforced by the fact that this crater is located in the middle of Amazonis Planitia, one of the larger regions of Mars’ vast northern lowland plains, where there is evidence of the past existence of an intermittent ocean.

This however really does not answer the question of why most of the impact’s ejecta fell to the north of the crater. From the release title is appears the planetary geologists think that this uneven distribution occurred because the impact occurred on a glacier. As the ground has a lighter appearance just to the south of the crater, I suspect their reasoning is that this light ground was hard bedrock while the darker material to the north was that glacial unit where the ground was more easily disturbed.

This is a guess however (a common requirement by anyone trying to explain the strange features so often found on the Martian surface). Other theories are welcome of course, and could easily be correct as well.

5 comments

Democratic NY mayor promises to redistribute the wealth of citizens

January 10, 2019 11:21 am Robert Zimmerman

They’re coming for you next: During his state of the city speech today the Democratic mayor of New York City, Bill de Blasio, promised bluntly to use the force of government to redistribute the wealth of the city’s citizens.

“Brothers and sisters, there’s plenty of money in the world. Plenty of money in this city,” his prepared speech reads. “It’s just in the wrong hands!”

I know whose hands this Democratic thug wants that money redistributed to: himself and his allies. This is what socialists/communists like him always do: steal from people to finance their own power and high class lifestyle.

And if you don’t live in New York City don’t make the mistake of thinking this doesn’t concern you. Politicians like de Blasio now run the Democratic Party, have significant power and control in many states and in Congress (with the willing support of large swaths of the populace), and are moving to institute these same oppressive policies nationwide. These mobs are coming, and they will be moving in on you, wherever you are, very soon.

12 comments

FBI union says FBI operations hurt by shutdown

January 10, 2019 11:11 am Robert Zimmerman

My heart bleeds: The head of the union that represents FBI agents petitioned Congress today, stating that the government shutdown is now beginning to affect FBI operations.

Does this mean they will no longer be able to perform their duties as Democratic Party operatives, spying on Republican candidates and working to void legal elections where Democrats are defeated?

Or does it mean that he fears we may discover that we don’t need them that much, that the work they do is generally pointless and a waste of the taxpayers’ money?

2 comments

Fastest Stratolaunch taxi test

January 10, 2019 8:46 am Robert Zimmerman

Capitalism in space: Stratolaunch has pushed its giant “Roc” airplane to a record speed of 136 mph in taxi tests this week.

The speed was fast enough for the airplane’s front wheel to lift off the ground. It is at present however unclear when they will attempt their first flight.

Leave a comment

Gerry Rafferty – Baker Street

January 9, 2019 6:01 pm Robert Zimmerman

An evening pause: There are some riffs that will always be remembered, even more than the song, even if the song is good. And this definitely applies to the sax solo here.

Hat tip Danae.

One comment

A visit to the Mexican border

January 9, 2019 12:32 pm Robert Zimmerman

Last night President Trump gave his first prime-time speech to the nation, focused specifically on the hot-button issue of illegal immigration. You can read the full text, with the Democratic response, here. A fair analysis can be read here, which also includes a thorough critique of the press’s mindless partisan reaction.

I usually don’t watch such speeches. I read the transcript afterward, to see if there is any substance there (usually not). It saves time.

What I did do yesterday however was visit the very location that is the subject and focus of these speeches, the border between the United States and Mexico. Diane and I and Earl, a visiting friend from back east, decided to give Earl a taste of international travel by driving down to Nogales to cross the border for lunch.

We do this periodically, not to go sightseeing but buy many of our prescription drugs, which tend to be about 75% cheaper in Mexico and do not require that prescription for purchase. For example, one of our cats has a fungal disease called valley fever which requires giving her a pill twice a day. In the states that drug costs more than $200 for a ninety day supply. In Mexico I can get that same amount for less than $50. (The cost difference illustrates well the mess our Congress has created of our drug industry, since the high cost is directly related to government regulations imposed in the last two decades and topped off by the passage of Obamacare in 2010.)

Anyway, below are some photos from this trip. They give you a sense of what it is like at one of the major populated border crossing points, which by the way and not surprisingly does not much resemble the impression given by our modern mainstream press.
» Read more

39 comments

A workout treadmill for cats

January 9, 2019 9:49 am Robert Zimmerman

News you can use: A company has now designed a smart treadmill specifically designed for cats.

The Little Cat’s biggest selling point is that it has a built-in incentive – an LED light that moves up the center of the ring. As anyone who’s ever flicked a laser pointer around on the floor knows, cats go nuts for those lights, and this might be the missing ingredient that gets their lazy butts onto the treadmill. In some of the videos it seems to work, but in others the cat is far more interested in the LED and looks visibly uncomfortable as soon as the floor starts to move under it.

Where other wheels are passive and only move when the cat starts running, the Little Cat can be set to move on its own at different speeds, like a treadmill. It’s controlled through a smartphone app, letting users set the speed, move the LED around, watch the cat through a live camera feed and even record voice samples to play back when you’re not home. The app also works like a fitness tracker, recording your pet’s run data and apparently using that to develop a customized exercise plan.

No pricing is available as yet. I’ve embedded the company’s video below the fold, which proves once again that it is impossible to predict the strange and absurd places humans will take their ingenuity.
» Read more

8 comments

SpaceX completes fit test of two sections of Starship hopper

January 9, 2019 9:44 am Robert Zimmerman

Capitalism in space: SpaceX has completed a fit test whereby they put the two main sections of their Starship hopper prototype together.

In a burst of activity that should probably be expected at this point but still feels like a complete surprise, SpaceX technicians took a major step towards completing the first Starship hopper prototype by combining the last two remaining sections (aft and nose) scarcely six weeks after assembly began.

SpaceX CEO Elon Musk also took to Twitter late last week to offer additional details and post what appears to be the first official render of Starship’s hopper prototype, which is now closer than ever before to looking like the real deal thanks to the incredible drive of the company’s southernmost employees. With the massive rocket’s rough aeroshell and structure now more or less finalized, Musk’s targeted February/March hop test debut remains ambitious to the extreme but is now arguably far from impossible.

More details about the status of both the Super Heavy and Starship here. As noted in the first link above, SpaceX is moving very quickly, at a pace unheard of in the rocket industry, to get these hopper prototypes ready for test flights. For example, this new effort at Boca Chica in Texas went from a barren spot to a full facility with a giant spacecraft in less than eight weeks.

4 comments

Hayabusa-2 to grab asteroid samples in February

January 9, 2019 9:36 am Robert Zimmerman

The Hayabusa-2 science team has decided that it will make their first attempt to land and grab samples from the asteroid Ryugu in February.

“The time has finally come,” JAXA senior project member Takashi Kubota said at a news conference on Jan. 8. “Two candidate landing spots have their own advantages and drawbacks, but we will robustly try to collect samples.” The two sites are near the equator of the asteroid. JAXA said it will pick one by early February.

Between Feb. 18 and Feb. 23, the Hayabusa 2 will start descending from its “home position” at an altitude of 20 kilometers from the asteroid. JAXA will use “target markers,” which will be dropped on Ryugu beforehand, to guide the probe.

Hayabusa 2 is scheduled to make three touch-and-go landings.

There are clearly risks here, since the asteroid is strewn so completely with rocks and boulders.

Leave a comment

Hubble’s main camera in safe mode

January 9, 2019 9:17 am Robert Zimmerman

The coming dark age: The Wide Field Camera on the Hubble Space Telescope has experienced “an anomaly” that has forced its shut down.

The announcement is a mere one paragraph long, and provides no further information.

This camera was installed on the space telescope during the last shuttle mission in 2009. It is now almost a decade since that mission, which was expected to extend Hubble’s life for at least five years. It is therefore not surprising that things are beginning to fail. In October they had a serious gyroscope problem when a gyroscope failed and they had problems getting their last back-up gyroscope to work. They got it working, but this has left us with a telescope with no gyroscope backups. With the next failure they will have to shift to one gyroscope mode, meaning sharp images will no longer be possible. Now the main camera has shut down.

Unfortunately, it appears that we are reaching the end of Hubble’s life span. The sad thing is that this shouldn’t be necessary. It can be repaired, but this would require a robot mission, something that would have been very difficult a decade ago but is quite doable at a reasonable cost today. No such mission is being considered however.

Even worse, the bad planning that is routine for our modern intellectual class has left us with no replacement, for the foreseeable future. In the late 1990s the astronomy community chose this path, deciding to replace Hubble with an infrared space telescope, the James Webb Space Telescope. They and NASA also decided to push the limits of engineering with Webb, resulting in a project that is about a decade behind schedule with a budget that has ballooned from $1 billion to $9 billion. Meanwhile, there has been no money for any other major space telescopes. And the one the astronomy community proposed in 2011, WFIRST, is already over budget and behind schedule, in its design phase.

The astronomy community has also decided in the past two decades that it could replace Hubble with giant ground-based telescopes, a decision that has so far proven to be problematic. Though adaptive optics can eliminate some of the fuzziness caused by the atmosphere, it limits observations to very narrow fields of view, meaning it cannot obtain large mosaics of big objects, such as this Hubble release earlier this week of an image of the nearby Triangulum Galaxy. Moreover, almost all of the giant ground-based telescopes built so far have struggled with many engineering issues.

In terms of astronomy, we are thus about to go blind, returning to the days prior to the space age when our view of the heavens was fuzzy and out of focus.

5 comments

Video of SpaceX fairing drop test

January 9, 2019 8:43 am Robert Zimmerman

Capitalism in space: SpaceX today released footage of a drop test of a fairing and the near miss catch by their ship Mr. Steven.

I have embedded the footage below the fold. After they drop the fairing from a helicopter, the ship comes within mere feet of catching the fairing in its giant net. Quite spectacular.
» Read more

4 comments

Pat Upton/Spiral Staircase – I Love You More Today Than Yesterday

January 8, 2019 6:03 pm Robert Zimmerman

An evening pause: From the 1960s, performed in the 2010s.

Hat tip Diane Zimmerman.

One comment

Shutdown and government politics slows some science work

January 8, 2019 9:24 am Robert Zimmerman

The partial government shutdown appears to be causing problems for some researchers, some of it fake and some of it real.

The article doesn’t put it that way. Instead, it sells the shutdown as a terrible tragedy, blocking all work by scientists, a claim that simply isn’t true if you read the article honestly.

The real problems include cases where the closure of government buildings prevents scientists from accessing their labs or research samples. The fake problems include things like this:

Rattlesnakes, bears, hurricanes, and freezing weather haven’t stopped ecologist Jeff Atkins from taking weekly hikes into Virginia’s Shenandoah National Park for the past 8 years to collect water samples from remote streams. But Atkins is now facing an insurmountable obstacle: the partial shutdown of the U.S. government, in its third week.

Park managers have barred Atkins from entering since 22 December 2018, when Congress and President Donald Trump failed to agree on a deal to fund about one-quarter of the federal government, including the National Park Service. That has shut down the sampling, part of a 40-year-old effort to monitor how the streams are recovering from the acid rain that poisoned them in past decades.

There is no reason this scientist can’t enter the park and get his samples. In fact, Trump administration policy has kept the national parks open, even if no one is working there. I am thus very suspicious of the claim that he is “barred” from entering.

Then there are claims that government scientists are forbidden from attending conferences. Bah. They aren’t slaves. If the conference is that important, they should go on their own dime. And if they aren’t willing to go, it makes me suspect their work is not that important. In fact, I know this, as I have watched many government scientists attend conferences merely to tout the wonderful things their government agency is accomplishing, not to really report on science.

The article also makes a big deal about the loss of pay to these individual scientists. My heart bleeds. For one thing, as government workers they are generally paid at a far higher rate, with many more benefits, than most taxpayers, who for the past decade have been suffering far worst economic times. These government scientists can afford the loss of pay for a few weeks.

For another, based on what has happened after all other previous shutdowns, Congress will approve their pay during this time, meaning this shutdown is really nothing more than an extra paid vacation for them.

I thus find myself having little sympathy for these scientists. In fact, the facts in this article make me inclined to think the taxpayer might benefit from getting rid of them all.

10 comments

Chinese rocket company tests vertical landing

January 8, 2019 9:04 am Robert Zimmerman

The new colonial movement: A Chinese rocket company has conducted its first vertical flight and landing tests of a prototype rocket.

Linkspace…has tested a tech demonstrator reusable rocket similar in utility to the Grasshopper rocket SpaceX used in its development of the Falcon 9 launch vehicle. The RLV-T5 technology demonstrator, also known as ‘NewLine Baby’, for vertical takeoff, vertical landing (VTVL) is designed to verify key technologies including variable thrust, multiple engine restarts and roll control with its flight and recovery tests, according to the press release (in Chinese).

The latest footage, released on Sunday, shows a tethered test which followed three months of preparations. The demonstrator is 8.1 metres high with a mass of 1.5 tonnes and uses five variable thrust engines. Linkspace now describes itself as the world’s third-largest recyclable rocket development team, after SpaceX and Blue Origin.

The article also describes an engine test by a different Chinese company. Both are being touted as part of China’s new private space effort, but I find myself somewhat skeptical. China might have given these companies some independent leeway, but in the end nothing they do is unsupervised by the Chinese government.

Regardless, they are making technical progress. It appears that Linkspace is aiming for a suborbital test flight later this year.

Leave a comment

Update on Chang’e-4 and Yutu-2

January 8, 2019 8:50 am Robert Zimmerman

Link here. The rover, Yutu-2, has entered a planned safe mode to protect it from the high temperatures of the lunar mid-day, while the lander, Chang’e-4 has been testing and deploying its instruments.

Leave a comment

Unmanned test flight of manned Dragon delayed again

January 8, 2019 8:43 am Robert Zimmerman

Elon Musk has now confirmed that the first unmanned test flight of the manned Dragon capsule has been delayed, and is now scheduled for sometime next month.

SpaceX is about a month away from launching its first commercial crew mission, the company’s founder, Elon Musk, tweeted this weekend. This will be a demonstration flight, without humans on board.

Officially, NASA had been holding to a January 17 launch date, but that has become untenable due to ongoing work to resolve technical issues, two sources said, as well as the partial government shutdown. More than 90 percent of the space agency’s employees are presently furloughed during the shutdown, which is affecting the agency’s ability to make final approvals for the launch. Some key government officials are continuing to work on the program without pay.

As far as I can tell, the “technical issues” are bureaucratic maneuvers by NASA designed solely to delay the launch. The article makes a big deal about the risks of this first test flight, as if none of its systems have ever flown before. That is absurd, While Dragon has been significantly modified, this can hardly be called a first flight for this capsule or rocket.

I repeat: The launch will occur on a SpaceX launchpad, run entirely by SpaceX employees. The only time NASA employees need get involved is during the docking procedures, and right now those employees at mission control and on ISS have been deemed essential and are working. If Trump ordered it, this mission could fly, even during this partial government shutdown.

9 comments

Private businesses take over services to keep Yellowstone functioning

January 8, 2019 12:45 am Robert Zimmerman

The private businesses that make their living from tourism at Yellowstone have picked up the tab for all services the National Park Service is no longer doing because of the the government shut down.

Xanterra Parks and Resorts, which runs the only hotels inside Yellowstone that remain open during the winter, is leading the effort to cover the $7,500 daily tab for keeping the roads plowed and the snowmobile trails groomed during the shutdown, according to NPR. Thirteen other private businesses that offer tours of the park are chipping in $300 a day to help cover that expense.

Meanwhile, Xanterra has some of its own employees assigned to clean park bathrooms during the shutdown, and snowmobile tour guides are packing their own toilet paper for customers to use.

These private businesses have a financial self-interest in keeping the park clean and functioning. And they also have an incentive to get the job done as efficiently as possible. In fact, they are demonstrating how little we need much of the park service.

I imagine similar things are occurring in many other national parks and forests. And if they are not, they should be. And those cases where their aren’t private businesses to pick up the slack, the local state governments should move in. They too have a financial incentive to keep these natural wonders open and unharmed.

7 comments

Portland State University moves to punish professor for uncovering bad scholarship

January 7, 2019 6:16 pm Robert Zimmerman

They’re coming for you next: Portland State University has moved to punish one of its professor who participated in a project to uncover bad and corrupt leftwing scholarship in the social sciences by writing fake papers and getting them published.

Peter Boghossian, an assistant professor of philosophy at Portland State University in Oregon, led a trio of scholars last year who submitted what they called “intentionally broken” papers to leading publications on gender, race and sexuality. Several of the absurd pieces were published.

Now, Portland State has initiated disciplinary action against Mr. Boghossian for an alleged breach of the institution’s ethical guidelines.

…The punishment Portland State may impose on Mr. Boghossian was unclear Monday morning, and the university did not immediately respond to questions posed about its process.

It must be emphasized that the three academics who participated in this project loudly considered themselves leftwing and liberal. No matter. They did something that revealed the hollowness and dishonesty of the entire “race, gender, and sex” academic community. That must not be allowed.

6 comments

Dido – White Flag

January 7, 2019 6:01 pm Robert Zimmerman

An evening pause: Hat tip Danae.

Leave a comment

TESS spots first exoplanets plus supernovae and more

January 7, 2019 5:17 pm Robert Zimmerman

The Transiting Exoplanet Surveying Satellite (TESS) has successful spotted its first exoplanets.

NASA’s Transiting Exoplanet Survey Satellite (TESS) has found three confirmed exoplanets, or worlds beyond our solar system, in its first three months of observations.

The mission’s sensitive cameras also captured 100 short-lived changes — most of them likely stellar outbursts — in the same region of the sky. They include six supernova explosions whose brightening light was recorded by TESS even before the outbursts were discovered by ground-based telescopes.

These discoveries confirm that the spacecraft is operating exactly as designed. Now comes the herculean task of analyzing the gigantic amount of data it is pouring down to see what is hidden there.

Leave a comment

Flowing cracked mud on Mars?

January 7, 2019 12:41 pm Robert Zimmerman

Cool image time! The image on the right, rotated, cropped, and reduced to post here, comes from the December image release of the high resolution camera of Mars Reconnaissance Orbiter (MRO. Uncaptioned, the release titles this image “Cracks in Crater Deposit in Acheron Fossae.” If you click on the image you can see the entire photograph at full resolution.

Clearly the cracks appear to be caused by a downward slumping to the north, almost like a glacier made of mud. We can also see places on the image’s right edge where the mud appears to have flowed off a north-south trending ridge, then flowed downhill to the north. All of this flow is away from the crater’s central peak, which is only partly seen in the photograph near the bottom. That section is the central peak’s southwestern end, with the whole peak a ridge curving to the northeast beyond the edge of the image.

At the north edge of this mud flow the cracks become wider canyons, as if long term erosion is slowing washing the mud away. The flow then stair steps downward in a series of parallel benches. Meanwhile, in the flat central area of the mud flow above can be seen oblong depressions suggesting sinks that also flow to the north.

crater context overview

You can get a better idea of the crater’s overall floor and central peak by the low resolution context image to the right. The white rectangular box indicates the area covered by the full image above. A close look at this part of the crater floor suggests to me a circular feature like a faint eroded smaller crater that includes as its eastern rim the larger crater’s central peak. This impression suggests that the flows seen in the full resolution image are heading downhill into the lowest point of this smaller crater, that upon impact had reshaped the larger crater’s floor.

This impression however is far from conclusive. The features in the large crater could simply be the random geology that often occurs in the floors of impact craters.

What makes this particular mud slide most interesting, as is usually the case for most Martian terrain, is its location.
» Read more

Leave a comment

January 4, 2019 Zimmerman/Batchelor podcast

January 7, 2019 10:14 am Robert Zimmerman

Embedded below the fold in two parts
» Read more

Leave a comment

Sunspot update December 2018: Decline to solar minimum continues

January 7, 2019 9:22 am Robert Zimmerman

Time for the monthly solar cycle update! NOAA today posted its monthly update of the solar cycle, covering sunspot activity for December 2018. As I do every month, I am posting it below, annotated to give it some context.

December 2018 sunspot activity

The graph above has been modified to show the predictions of the solar science community. The green curves show the community’s two original predictions from April 2007, with half the scientists predicting a very strong maximum and half predicting a weak one. The red curve is their revised May 2009 prediction.

There really isn’t much to say about the sunspot activity in December. It continued to show a steady decline to solar minimum, exhibiting activity very comparable to what we saw in mid-2008 when the previous unusually long and extended solar minimum began.

One interested detail however: When NOAA issued this graph last month, it finally extended it out beyond the end of 2019 to the end of 2022. In doing so, it also extended out the 2009 prediction of the solar science community, as indicated by the red curve. I hadn’t commented on this last month, but if you look at that curve it drops to zero and then flatlines for the entire year of 2022.

If this is what the solar science community now expects for this upcoming minimum, it means that community is now expecting a record-breaking minimum, lasting far longer than any previous minimum, two to three years at least. It also means that they have not dismissed the possibility that the Sun is about to enter a Grand Minimum, where no significant sunspot activity is seen for literally decades.

Should such a grand minimum occur, it bodes ill for global warming advocates. The track record of the Earth’s climate consistently shows that when sunspot activity declines, the global climate gets colder. Why this happens is not clearly understood, though there is at least one theory backed up by good experimental data. Should this happen, we shall discover that global cooling is a far worse thing to fear than global warming.

9 comments

The Ross Sisters – Solid Potato Salad

January 4, 2019 6:01 pm Robert Zimmerman

An evening pause: From the 1944 movie, Broadway Rhythm. It might be cheesy, but who cares.

Hat tip Phill Oltmann.

12 comments

Using LRO to find Chang’e-4

January 4, 2019 8:49 am Robert Zimmerman

LRO image of Chang'e-4 landing area

The Lunar Reconnaissance Orbiter (LRO) science team has released a high resolution image from 2010 pinpointing the area on the floor of Von Kármán crater where Chang’e-4 landed. On the right is a reduced and partly annotated version.

They have not actually found the lander/rover, since this image was taken long ago before Chang’e-4 arrived. However, this image, combined with the Chang’e-4 landing approach image, tells us where the lander approximately landed. It also pinpoints where to look for it when LRO is next able to image this region, around the end of January.

By then, Yutu-2 will hopefully have traveled some distance from Chang’e-4, and LRO will be able to spot both on the surface.

Leave a comment

« 1 … 373 374 375 376 377 … 1,018 »

Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.