Category: Behind The Black

Video from Hayabusa-2’s touchdown

7:51 am

The Hayabusa-2 science team has released a video taken of the spacecraft’s quick touchdown and sample grab on the asteroid Ryugu.

I have embedded the video below the fold. It not only shows the incredible rockiness of Ryugu’s surface, with the spacecraft barely missing a large rock as it came down, it also clearly shows the resulting debris cloud and surface changes after touchdown and the firing of Hayabusa-2’s projectile into the surface to throw up material that the spacecdraft could catch. You can actually see pebbles flying about below and around the spacecraft as it quickly retreats.

The Hayabusa-2 science team plans another touchdown in the next few months, this time using a different technique to disturb the surface and grab the resulting ejecta.
» Read more

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Beresheet sends back first pictures

7:35 am

The privately-built Israeli lunar lander Beresheet has sent back its first pictures, taken on its way to the moon.

The picture, taken 37,600 km from Earth, shows the Israeli flag and the inscription with “Am Yisrael Hai” (the People of Israel Live) in Hebrew and the inscription “Small Country, Big Dreams” in English. The spacecraft was snapped as it passed over Australia, and the photograph was taken during a very slow rotation by Beresheet. The Israeli spacecraft, built in an IAI factory, is in an elliptical orbit around Earth – its greatest distance from Earth (the apogee) at this stage is some 131,000 kilometers.

While the press wants to trivialize this image by calling it a selfie, it was taken for very important engineering reasons. It demonstrates that the camera and the spacecraft’s pointing systems are working, exactly as planned.

Beresheet will continue to raise the apogee of its orbit until it enters the Moon’s gravitational sphere of influence, when it will then shift into lunar orbit.

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Hubble’s main camera down

1:36 pm

The main camera on the Hubble Space Telescope has suspended operations, and remains so as engineers troubleshoot the problem.

According to NASA, at 8:31 p.m. EST Feb. 28 (01:31 GMT March 1), 2019, the Advanced Camera for Surveys, or ACS, suspended its operations when an error was detected while the instrument was performing a routine boot procedure. “The error indicated that software inside the camera had not loaded correctly,” a statement from NASA reads. “A team of instrument system engineers, flight software experts and flight operations personnel quickly organized to download and analyze instrument diagnostic information.

They have not yet pinpointed the cause of the problem. The telescope has other cameras, however, though one of which had problems several months ago.

It is ten years since the last shuttle repair mission. That mission was expected to extend the telescope’s life for five years. Thus, the end Hubble’s life is getting closer and closer.

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Scientists confirm first exoplanet candidate found by Kepler

1:07 pm

Worlds without end: Ten years after Kepler was launched into space to find exoplanets, astronomers have finally confirmed one of the space telescopes thousands of candidates.

Despite being the very first planet candidate discovered by NASA’s Kepler Space Telescope, the object now known as Kepler-1658 b had a rocky road to confirmation. The initial estimate of the size of the planet’s host star was incorrect, so the sizes of both the star and Kepler-1658 b were vastly underestimated. It was later set aside as a false positive when the numbers didn’t quite make sense for the effects seen on its star for a body of that size. Fortuitously, Chontos’ first year graduate research project, which focused on re-analyzing Kepler host stars, happened at just the right time.

“Our new analysis, which uses stellar sound waves observed in the Kepler data to characterize the host star, demonstrated that the star is in fact three times larger than previously thought. This in turn means that the planet is three times larger, revealing that Kepler-1658 b is actually a hot Jupiter-like planet,” said Chontos. With this refined analysis, everything pointed to the object truly being a planet, but confirmation from new observations was still needed.

“We alerted Dave Latham (a senior astronomer at the Smithsonian Astrophysical Observatory, and co-author on the paper) and his team collected the necessary spectroscopic data to unambiguously show that Kepler-1658 b is a planet,” said Dan Huber, co-author and astronomer at the University of Hawaiʻi. “As one of the pioneers of exoplanet science and a key figure behind the Kepler mission, it was particularly fitting to have Dave be part of this confirmation.”

It is important to remember that until scientists obtain independent data on each of these candidates, they are not yet confirmed as exoplanets, and might only be false positives. To do this, however, is going to take a lot of work and time.

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Firefly inks big launch contract

5:43 pm

Capitalism in space: The smallsat rocket company Firefly has signed a launch contact with an Italian satellite company to launch 15 of its satellites.

Firefly Aerospace Inc. has agreed to provide an Italian company 15 rides to space over a five-year period, the Cedar Park startup announced March 4. The agreement enables D-Orbit SpA to purchase room on future flights of Firefly’s Alpha rocket. The deal allows the Italian satellite company to “purchase, market and resell launch vehicle capacity, and to provide logistics support and integration activities at its operational premises in Italy,” according to the announcement.

I am certain that D-Orbit has options to back out and sign with other rocket companies should Firefly fall behind in its development of Alpha, which they say will have its first launch before the end of this year. Nonetheless, this contract bodes well for the company, as it indicates that others have faith in them.

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Sunspot update February 2019: The Sun flatlines again

1:26 pm

We are now deep into solar minimum. On Sunday NOAA released its the monthly update of the solar cycle, covering sunspot activity for February 2019. As I have done every month since the start of Behind the Black, I am posting it below, annotated to give it some context.

February 2019 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.

For the second time since the beginning of the solar minimum last year, the Sun flat-lined for an month, producing no visible sunspots during the entire month of February.

That streak has continued into March. At present we are four days into March, and still no sunspots.

The big question that I will be repeating probably every month for the next two years is whether we are merely experiencing an early and possibly deep solar minimum, or the advent of a new grand minimum, with no visible sunspots for decades. During the last grand minimum in the 1600s there is evidence the Earth cooled, so much so that it was labeled the Little Ice Age. And with previous grand minimums over the past few thousand years there is evidence that similar coolings occurred. Similarly, periods where sunspot activity was high also appear to have been periods of warmer temperatures.

Why is not clearly understood, though there is some evidence that it might be related to the increasd cosmic ray flux during solar minimum.Those rays might interact with the atmosphere to produce more clouds, thus cooling the Earth. This is not proven however and remains merely a theory linked to some tentative preliminary evidence.

If we do enter a grand minimum, scientists will likely get the answers to these questions. However, we might also find ourselves experiencing significantly colder weather. I am right now flying from Chicago to Columbus, over Lake Michigan, which is filled with ice floes, something we have not seen in March for decades. Nor has this kind of cold weather been unusual for the past decade or so. Could it be because of the weak solar maximum we just experienced and the deep and extended solar minimum just before that? No one knows.

All we can do is gather data, and find out.

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More conflict on India-Pakistan Kashmir border

9:33 am

Gunfire this weekend from soldiers on both sides of the disputed India-Pakistan Kashmir border has resulted in more casualties.

Pakistan’s military said two of its soldiers were killed in an exchange of fire with Indian forces near the Line of Control that separates Kashmir between the rivals. It marked the first fatalities for Pakistani troops since Wednesday, when tensions dramatically escalated between the nuclear-armed countries over Kashmir, which is split between them but claimed by both in its entirety.

Indian police, meanwhile, said two siblings and their mother were killed in Indian-controlled Kashmir. The three died after a shell fired by Pakistani soldiers hit their home in the Poonch region near the Line of Control. The children’s father was critically wounded.

There appears to be an effort by politicians to ease the tensions, but it is not clear whether this effort is working.

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Dragon successfully docks with ISS

8:58 am

Capitalism in space: SpaceX’s Dragon capsule, designed to carry humans to space, has successfully docked for the first time at ISS.

The flight really has only one major task left, which it to return safely to Earth, which presently is scheduled for 8:45 am (eastern) on March 7. I expect that to go smoothly as well.

NASA and SpaceX will of course need to review all the test data from this unmanned test flight before okaying a manned flight. SpaceX also needs to first do a launch abort test, using this capsule. However, I do not expect either to result in any issues that should prevent a manned launch in July, as SpaceX presently plans.

NASA however might think differently. There have been strong factions within its management and bureaucracy that are hostile to this effort, and have been working to stall or stop it.

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EXOS successfully flies its reusable suborbital rocket, SARGE

8:50 am

Capitalsm in space: EXOS yesterday successfully completed its first full test flight, with commercial payloads, of its reusable suborbital rocket, SARGE.

The link has video of the launch and rocket plus payload recovery.

As I noted earlier this week, this company is positioning itself well to join the smallsat boom. It has developed a reusable rocket that it intends to use both as a testbed for development of an orbital reusable version, while simultaneously earning income to pay for that development.

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Dragon successfully launched on its first unmanned test flight to ISS

1:05 am

Capitalism in space: SpaceX tonight successfully launched its manned Dragon capsule on its first unmanned test flight to ISS.

They also successfully landed the first stage. I have embedded below the fold the video of the launch. Dragon will dock with ISS in about a day.

The leaders in the 2019:

3 SpaceX
2 China
2 Europe (Arianespace)

The U.S. now leads China and Europe 4 to 2 in national rankings.
» Read more

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InSight’s heat sensor begins drilling down

5:22 pm

The German-made heat sensor hammer that the U.S. lander InSight placed on the Martian surface has begun hammering its heat sensor into the ground.

On 28 February 2019, the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) ‘Mole’ fully automatically hammered its way into the Martian subsurface for the first time. In a first step, it penetrated to a depth between 18 and 50 centimetres [7 to 19 inches] into the Martian soil with 4000 hammer blows over a period of four hours. “On its way into the depths, the mole seems to have hit a stone, tilted about 15 degrees and pushed it aside or passed it,” reports Tilman Spohn, Principal Investigator of the HP3 experiment. “The Mole then worked its way up against another stone at an advanced depth until the planned four-hour operating time of the first sequence expired. Tests on Earth showed that the rod-shaped penetrometer is able to push smaller stones to the side, which is very time-consuming.

They will let the hammer cool down for a few days, and then resume hammering. If all goes well, they hope to get as much as 16 feet down.

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Pegasus problems continue

9:26 am

Capitalism in space: The much-delayed launch of a NASA science satellite by Northrop Grumman’s Pegasus rocket continues to slip, with the unstated technical issues that caused several earlier launch dates to be cancelled lingering.

NASA’s Ionospheric Connection Explorer (ICON) mission was scheduled to launch in late 2017 on a Pegasus XL rocket based out of Kwajalein Atoll in the Pacific. That launch was delayed to June 2018 because of an issue with the rocket’s separation system, then delayed again when engineers detected “off-nominal” data from the rocket during a ferry flight from California ahead of the June launch attempt.

That problem was linked to a faulty sensor that was replaced, with the launch eventually rescheduled for Nov. 7, this time flying out of Cape Canaveral Air Force Station in Florida. However, after the rocket’s L-1011 aircraft took off for the Nov. 7 launch attempt, engineers again detected off-nominal data from the rocket and scrubbed the launch.

Neither NASA nor Northrop Grumman Innovation Systems, which builds the Pegasus, have provided additional details about the problem, but at a December meeting of an advisory committee, Nicky Fox, director of NASA’s heliophysics division, said engineers were examining the control system of the rocket’s fins.

Fox, speaking at a Feb. 25 meeting of a National Academies committee here, said the launch was now scheduled for no earlier than the second quarter. “Northrop Grumman is still working extremely hard to analyze what is causing these anomalies during the ferry flight,” she said. “They’re working extremely hard to try and get ICON up as soon as possible.”

The article notes that Pegasus has only had three launches in the past decade. It was originally designed to provide a low cost option for smaller satellites, but over the decades did not fulfill that goal. It is now much more expensive than the many smallsat rockets coming on line. With these unexplained issues preventing this launch as well, its future appears dim at best

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Canada commits to NASA’s Lunar Gateway boondoggle

9:10 am

Canada’s leftwing government has agreed to be NASA’s first official international partner in the agency’s Lunar Gateway project, designed to go nowhere and cost billions.

Canada has become the first nation to formally commit to NASA’s lunar Gateway project with a financial contribution to cover a 24-year period and the development of a new generation robotic Canadarm.

Canadian Prime Minister Justin Trudeau made the announcement Wednesday that Canada would be partnering with NASA and spending 2 billion Canadian dollars ($1.4 billion) over 24 years on the Lunar Orbital Platform Gateway program, a human-tended facility in orbit around the moon, as well as other space programs. The announcement included funding of 150 million Canadian dollars over five years for a new Lunar Exploration Accelerator Program to help small and medium-sized businesses develop new technologies to be used and tested in lunar orbit and on the moon’s surface in fields that include artificial intelligence, robotics and health.

Canada will develop and contribute a smart robotic system – Canadarm3 – that will repair and maintain the Gateway, Trudeau announced.

I wonder if this Canadian program will survive a new rightwing administration. Such boondoggles often don’t, or get reshaped into something completely different.

Of course, this question assumes a truly rightwing government might someday retake power in Canada.

We are now entering a new cold war. This time the battle lines are not between the capitalist west and a communist Soviet bloc, but between the socialist big governments across the globe and the capitalist free citizenry struggling to survive independently under the thumb of those increasingly oppressive governments.

We can see this clearly in space. While big government space agencies in the U.S., Europe, Russia, and Canada are teaming up to get coerced government funding for Gateway (even as they work to simultaneously squelch any competing space exploration visions), private companies like SpaceX, Blue Origin, and the new smallsat companies strive to launch their own private endeavors, using profits and any available investment capital they can convince others to freely provide them.

The big government space programs will spend a lot of money taken involuntarily, wield power to maintain their dominance, and likely accomplish relatively little for all that power and money. The small private efforts, if allowed to do what they want to do, will spend comparatively little capital (voluntarily committed to them), work very efficiently, and likely get a lot more done. The key is whether the former will allow the latter the freedom to operate.

Sadly, the track records of powerful government throughout the history of the world leaves me very pessimistic about this coming cold war. Those governments will quite likely use its growing unchecked power to squelch any competition, especially competition that makes them look foolish.

We have already seen this happen somewhat at NASA with its commercial crew program. Unless the public starts voting for politicians that favor them over the government — something that public simply hasn’t done for more than a century — I can only see this government dominance grow and worsen.

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Beresheet successfully completes engine burn

8:39 am

After a computer issue prevented its last course correction, Beresheet, the Israeli private lunar probe, successfully completed that engine burn yesterday, raising its Earth orbit’s apogee to 81,000 miles, almost a third of the way to the Moon.

The Beresheet team has not explained exactly what went wrong with the computer earlier this week, or what they have done to fix the problem. All they said is that they have figured it out and worked around it.

The next engine burn to raise the orbit further will occur in about a week.

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Rising tensions between India and Pakistan

1:18 pm

One day after India completed an air strike in Pakistan on what it called a “militant group” responsible for a suicide bombing that killed more than 40 Indian soldiers earlier in February, Pakistan now claims it has shot down two Indian jets near the border between the two countries.

Why should we care?

The escalation, many fear, has increased the risk of a full-fledged military confrontation between the two nuclear-armed countries. The biggest worry for the international community at the moment is that this could lead to a nuclear confrontation. Although, both countries have played down the risk of a nuclear war, regional and international players remain watchful.

The possibility of nuclear war? No big deal, and far less important than watching and being absorbed by Congressional testimony of a convicted liar whose life, no matter how odious, has been destroyed not because of anything he actually did but because he simply happened to be the lawyer for Donald Trump.

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Trump walks out on North Korea summit

1:09 pm

Unsatisfied with the deal offered by North Korea’s leader on his nuclear weapons, President Trump abruptly ended their summit meeting in Vietnam today.

Donald Trump’s talks with Kim Jong-un ended abruptly on Thursday as the president said he was forced to walk away after the North Korean dictator demanded that all sanctions be lifted in return for giving up only some of his nukes.

Trump said the final snag that caused the sudden breakdown was over sanctions – and Kim’s push to have all of them lifted in exchange for a concession Trump and his secretary of state could not live with. ‘Sometimes you have to walk away,’ Trump told reporters at a press conference in Hanoi that was abruptly moved up after a breakdown in talks.

The president expressed his hope that the two leaders would meet again, but acknowledged: ‘It might be soon, it might not be for a long time. I can’t tell you.’

The standard American politician since the 1960s would have instead gone through with the ceremonies, including signing some form of fake agreement that in terms of the U.S. would have stunk. That standard American politician would have typically been willing to sell out the U.S. in order to save face.

Trump is no standard American politician. He is there to actually negotiate, and sometimes a negotiation requires you, as he said, to walk away, as Reagan did with the Soviets in 1986.

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New Horizons data suggests the Kuiper Belt is emptier that previously believed

12:33 pm

The uncertainty of science: An analysis of data from New Horizons now suggests a paucity of small objects in the Kuiper Belt.

Using New Horizons data from the Pluto-Charon flyby in 2015, a Southwest Research Institute-led team of scientists have indirectly discovered a distinct and surprising lack of very small objects in the Kuiper Belt. The evidence for the paucity of small Kuiper Belt objects (KBOs) comes from New Horizons imaging that revealed a dearth of small craters on Pluto’s largest satellite, Charon, indicating that impactors from 300 feet to 1 mile (91 meters to 1.6 km) in diameter must also be rare.

I therefore wonder how the objects we do find there formed. The volume of space in the Kuiper Belt is gigantic, and if the larger bodies found so far are the bulk of the objects there, what did they coalesce from? Moreover, it seems unlikely that the few large objects we have found there would have been able to clear the region out of small objects.

Overall, this is a fundamental mystery tied directly to how the solar system formed, and illustrates how little we know about that process.

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Ceres has too much water!

11:29 am

The uncertainty of science: In a paper released today, scientists puzzle over the amount of water they have detected evaporating from the dwarf planet Ceres, finding that observations by Dawn of its surface do not provide enough water sources to explain the amount of water in its thin atmosphere.

From the abstract:

The dwarf planet Ceres, the largest object in the asteroid belt, is known to contain large amounts of water ice, and water vapor was detected around it. Possible sources of the water are surface exposure of ice through impacts and subsequent sublimation when heated by sunlight, or volcanic activity. It turns out that with either process it is difficult to create sufficient water vapor to explain the observations. This means that the geological processes on Ceres are not fully understood.

They propose several possible explanations for the discrepancy. Either the measurements of evaporation are wrong, or they have not fully mapped the surface water sources on Ceres. Either or both are certainly possible, as there are great uncertainties here.

To me, the most interesting quote from their paper however is the amount of water discovered. Besides finding water on the surface at nine locations “localized on crater floors or slopes, and generally in or close to shadows,” they also found a lot of water under the surface.

The gamma ray and neutron detector on Dawn discovered a global ice‐rich layer in the subsurface of Ceres, at a depth of ~1 m in equatorial regions and much closer to the surface in polar regions. The estimated abundance of ice in this layer is ~10%. … Evidence for ice on depth scales of a few kilometers is [also] reported by Sizemore et al. (2018). From the analysis of geomorphological features, they find that the distribution of ice is heterogeneous on scales of 1 km to hundreds of kilometers.

In other words, Ceres has a lot of water below the surface, even if the evaporation rate observed by Dawn does not at present match the amount of water vapor observed surrounding Ceres.

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Curiosity sends its first images in two weeks

9:30 am

The computer problems that caused Curiosity to cease science operations two weeks ago appears to have ended with the arrival of the first new images today.

The second link above goes to the images arriving today from Curiosity’s ChemCam camera, designed to take macro images of small features on the surface. The rover also sent down a small set of thumbnail images taken by one of its navigation cameras.

It appears they have figured out why the computer did an unexpected reboot in mid-February, and are now willing to let the rover resume science operations. There is no word on what they have learned, or whether it poses a future threat to the mission, but the fact that they are downloading new data is a good sign.

I must note again that this is news you will not see anywhere else. Most news sources today will wait for the NASA press release to report on Curiosity’s recovery, while I like to do some real journalism, reporting events as they happen. Consider this another reason to donate to Behind the Black during this month’s fund-raising drive.

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Planet-wide groundwater system on Mars

9:15 am

Old news: The European Space Agency today released a press release announcing the results of a science paper that appears to have found evidence of a planet-wide groundwater system on Mars.

I call this old news because I reported on this paper a month ago here on Behind the Black: Well water likely available across Mars.

We are now near the end of my February birthday-month fund-raising drive. If anything should justify a donation or subscription, this story should provide it. You can either wait for the mainstream press to rewrite press releases, or you can support my effort to get real news to you now, reported with both enthusiasm and honest skepticism.

I really do hate to brag, but I also don’t believe in false modesty.

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Close-up of Bennu’s north pole

8:58 am

Bennu's north pole
Click for full image.

The OSIRIS-REx science team has released a very high resolution image taken of Bennu’s north pole region. To the right is the most interesting part of that image, cropped by me to show here.

This image shows a region near asteroid Bennu’s north pole on the terminator line between the asteroid’s day and night sides. The OSIRIS-REx spacecraft’s MapCam camera obtained the image on Feb. 20 while in orbit around the asteroid from a distance of 1.1 miles (1.8 km). At this distance, each pixel covers approximately 4.5 inches (12 cm) of Bennu’s surface. The largest boulder, located slightly left of the center, measures around 52 feet (16 meters) across, which, for scale, is the length of the trailer on a semi-truck.

In other words, if this was a truck stop along an interstate highway, you could see the driver getting out of that semi to head inside for dinner.

The spacecraft right now is not doing much science work. They are in what they call the Orbital A phase of the mission, where they are in a very low orbit along the terminator line between night and day — generally a mile above the surface — and are using this orbit to give the engineering team practice maneuvering at such an orbit while they transition from using the stars to navigate to using landmarks on the surface.

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ExoMars prototype test driven from 6,000 miles away

8:43 am

The engineering team that will drive ExoMars 2020 on the surface of Mars in 2021 has completed a test drive using an engineering prototype, controlling it from more than 6,000 miles away.

Experts at the European Space Agency’s centre in Oxfordshire completed a series of tests across nearly 6,900 miles (11,000 km) in order to see how the Mars rover reacts to commands across large distances.

When on the surface of Mars, the rover will need to be controlled when it is up to 250 million miles from Earth.

The trials team used a new model called ‘Charlie’ to test hardware, software and to practice science operations for the future European Space Agency (ESA) ExoMars rover, which will look for life on Mars in 2021. The Atacama desert was chosen because it is the closest we can get to a Martian-like environment.

I must admit that every press release from Europe about ExoMars 2020 gives me worried chills. Each release is often filled too much with empty boasts and little substantive detail. Worse, each seems to repeatedly remind me of some guy working in his garage on a weekend project.

The issue could merely be a case of poor press release writing, but something about each release makes these alarm bells go off in the back of my mind. With the launch only about sixteen months away, I hope I am wrong.

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