Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Martian dust devil!

11:44 am

Martian dust devil!
Click for full image.

Cool image time! The science team for the high resolution camera today posted a new captioned image, cropped by me to the right to post here, showing an active Martian dust devil as it moves across the surface of Mars.

Dust devils are rotating columns of dust that form around low-pressure air pockets, and are common on both Earth and Mars. This Martian dust devil formed on the dust-covered, volcanic plains of Amazonis Planitia. The dust devil is bright, and its core is roughly 50 meters across. The dark streak on the ground behind the dust devil is its shadow. The length of the shadow suggests the plume of rotating dust rises about 650 meters into the atmosphere!

That’s about 2,100 feet tall, almost a half mile in height. The location, Amazonis Planitia, is part of the northern lowlands of Mars, flat and somewhat featureless. It is also somewhat near the region near Erebus Montes that is the candidate landing site for SpaceX’s Starship rocket, a region that appears to have a lot of ice just below the surface.

The science team also linked to a 2012 active dust devil image that was even more spectacular. I have also posted on Behind the Black a number of other dust devil images, highlighting this very active, dramatic, and somewhat mysterious aspect of the Martian surface:
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ULA’s Atlas 5 launches Solar Orbiter

9:26 pm

Capitalism in space: ULA tonight successfully launched a new solar science spacecraft Solar Orbiter.

For more information about Solar Orbiter, which will take the first high resolution images of the Sun’s poles, see the link above or video I’ve embedded below the fold.

Earlier today Northrop Grumman aborted the launch of its Cygnus cargo freighter to ISS only three minutes before launch because of an issue with a ground support sensor. Right now they are are targeting a new launch date of February 13, 2020.

The status in the 2020 launch race:

3 China
2 SpaceX
1 Arianespace (Europe)
1 Rocket Lab
1 Russia
1 Japan
1 ULA

In the national ranking, the U.S. now leads China 4-3. If Northrop Grumman had launched, that lead would have been 5-3, and the U.S. total would have been comprised of four different and completely independent competing launch companies, all capable of topping the efforts of entire nations. If that doesn’t illustrate the power of freedom, capitalism, competition, and private ownership, I don’t know what does. Moreover, this is only the start. The U.S. right now has numerous other new launch companies rushing to join the competition.

Even more startling, the way we do things is freely available to every other nation in the world. All they have to do is to embrace freedom and the reduction of control and power by their governments. Sadly, very few in these times are willing to do this. In fact, even the U.S. resisted this concept for the entire last half of the 20th century. Only in the past decade have we returned to our roots, and that decision is now beginning to bear abundant fruit.
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Sunspot update: A tiny burst of activity that might mean something

2:05 pm

On February 3, 2020, NOAA posted its January of its monthly graph showing the long term sunspot activity of the Sun. As I have done now every month since this webpage began in 2011, it is posted below, with annotations:

After seven months of practically no sunspot activity, the longest such stretch in probably a century, January had a tiny burst of activity, breaking that string. Of the month’s four sunspots, two had a polarity from the old solar cycle, two from the new.

January 2020 sunspot activity
The graph above has been modified to show the predictions of the solar science community for the previous solar maximum. 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, extended in November 2018 four years into the future.

Despite their low number and general weakness, the continuing appearance of sunspots with polarities aligned with the new cycle strongly indicates that we will have a solar maximum in the next five years, not a grand minimum lasting decades that some scientists are predicting. While the year is young and it is certainly too soon to trust any trends, the fact that January saw an increase in activity over the past seven months suggests that we might have passed the low point of the minimum. We shall find out this year.

It must be remembered that the uncertainties in this field of science remain gigantic. No one really understands why the Sun’s magnetic dynamo goes through these cycles and flips in polarity. No one really understands why it produces sunspots as it does. And no one for sure yet knows exactly how the Sun’s cyclical behavior directly effects the climate. We only have circumstantial evidence, some of which can be legitimately questioned.

What is certain is that we don’t know very much, and are always in error when we forget this fact. Remember this always when some politician or scientist claims the science is settled or certain, and they know without doubt what is going to happen. They are either lying, fooling themselves, or are simply fools. In any case, such certainty in science should never be trusted.

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The impact of coronavirus on China’s space industry

10:15 am

Link here. The focus when discussing the epidemic, which continues to grow, should certainly not be on how it is slowing China’s space industry. At the same time, any slow down in their space effort will give us a good indicator on how the virus is effecting their entire economy.

Anyway, it appears, at least as this moment, that the biggest effect in space is the halt of operations for the Kuaizhou smallsat rocket.

Expace, a launch service provider for solid-propellant Kuaizhou rockets, has temporarily halted work due to its proximity to the epicenter of the outbreak. A new Kuaizhou-11 rocket, larger than the Kuaizhou-1A currently in service, was reportedly scheduled for a test flight late February.

Expace is situated in the Wuhan National Space Industry Base, a hub designed to facilitate commercial space activities. The firm is a spinoff from defense contractor CASIC and its subsidiary, China Sanjiang Space Group. The Kuaizhou launch vehicle series are understood to be derived from missile technology.

Other impacts probably won’t become obvious for months, when we can gauge whether there has been a slow down in Chinese launches below the predicted 40 for 2020.

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Voyager-2 back in action

10:02 am

Engineers announced yesterday that Voyager-2 has resumed science operations after going into safe mode in late January.

“Mission operators report that Voyager 2 continues to be stable and that communications between Earth and the spacecraft are good,” agency officials wrote in a mission update yesterday. “The spacecraft has resumed taking science data, and the science teams are now evaluating the health of the instruments following their brief shut-off.”

Still ticking after 42 years in space. Take that, Timex!

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NASA confirms seriousness of 2nd Starliner software issue

5:38 pm

At a press conference today, NASA and Boeing officials confirmed the rumors that there was a second software error during Starliner’s unmanned demo mission in December that might have caused a serious failure had it not been caught on time.

[After the first software error], engineers began reviewing other critical software sequences as a precaution and discovered yet another problem. Software used to control thruster firings needed to safely jettison the Starliner’s service module just before re-entry was mis-configured, set for the wrong phase of flight.

Had the problem not been found and corrected, the cylindrical service module’s thrusters could have fired in the wrong sequence, driving it back into the crew module and possibly triggering a tumble or even damaging the ship’s protective heat shield.

While a detailed analysis was not carried out at the time, “nothing good can come from those two spacecraft bumping back into one another,” said Jim Chilton, a senior vice president for Boeing Space and Launch.

That two different software errors were not caught prior to flight has NASA demanding a complete review of Boeing’s quality control systems. And NASA here is correct. Boeing as a company appears to have fundamental quality control issues up and down the line, in all its projects. A complete review appears warranted.

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A bullseye on Mars

12:30 pm

Bullseye crater on Mars
Click for full image.

Cool image time! The photo on the right, cropped and reduced to post here, was taken by the high resolution camera of Mars Reconnaissance Orbiter (MRO) on November 30, 2019. It shows a lone crater on the flat northern lowlands of Mars in a region dubbed Arcadia Planitia.

The crater is intriguing because of its concentric ridges and central pit. As this region is known to have a great deal of subsurface water ice, close to the surface, these features were probably caused at impact. My guess is that the ice quickly melted, formed the kind circular ripples you see when you toss a pebble in a pond, but then quickly refroze again, in place.

This location is also of interest in that is it just north of the region that SpaceX considers the prime candidate landing site for its Starship manned spaceship.

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Successful first light for CHEOPS space telescope

12:02 pm

The science team for Europe’s exoplanet-hunting CHEOPS space telescope announced today that the telescope has successfully obtained its first pictures, and that all appears to be working correctly.

Preliminary analysis has shown that the images from CHEOPS are even better than expected. However, better for CHEOPS does not mean sharper as the telescope has been deliberately defocused. This is because spreading the light over many pixels ensures that the spacecraft’s jitter and the pixel-to-pixel variations are smoothed out, allowing for better photometric precision. “The good news is that the actual blurred images received are smoother and more symmetrical than what we expected from measurements performed in the laboratory,” says Benz. High precision is necessary for CHEOPS to observe small changes in the brightness of stars outside our solar system caused by the transit of an exoplanet in front of the star. Since these changes in brightness are proportional to the surface of the transit planet, CHEOPS will be able to measure the size of the planets. “These initial promising analyses are a great relief and also a boost for the team,” continues Benz.

I suspect the planned fuzziness of their images is why the press release did not include them.

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A Chernobyl fungus that thrives on radiation

11:51 am

Scientists have found that a Chernobyl fungus that eats radiation, turning it into food, is so successful that they have sent samples to ISS to see how it responses to space radiation.

By growing it in the International Space Station, where the radiation level is hiked compared to that on Earth, Venkateswaran and Professor Clay Wang of the University of Southern California were able to monitor mutation. When microorganisms are put under more stressful environments, they release different molecules, which could further out understanding of the fungi and how it can be used to develop radiation-blocking drugs for humans.

It is also possible that the fungus could be adapted for other uses.

Kasthuri Venkateswaran, a research scientist at NASA who is leading the experiments on the Cryptococcus neoformans fungi, believes that by extracting its radiation-absorbing power and manufacturing it in drug form, it could be used as a ‘sun block’ against toxic rays.

It would allow cancer patients undergoing radiation therapy, nuclear power plant engineers and airline pilots to operate without fear of absorbing a deadly dose of rays, Venkateswaran envisaged to Scientific American magazine.

The fungi’s radiation-converting power could also be used to power electrical appliances, with it being touted as a possible biological answer to solar panels.

It appears that the fungi’s high level of melanin contributes to its ability to do this.

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NASA delays commercial bidding process for its unmanned lunar landers

10:30 am

Capitalsm in space: NASA has postponed the bidding process for both the commercially-built lander that will bring its its VIPER lunar rover as well as the smaller landers that will bring simpler science packages to the Moon.

In the first case, it appears that the commercial companies wanted more time because VIPER is a heavier and bigger payload than their landers are currently designed for. In the second case, the reasons for the postponement are less clear, leaving the companies involved somewhat puzzled and in the dark.

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