Category: Points of Information

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

Perseverance records sound of dust devil

9:23 am

For the first time scientists have used the microphone on the Mars rover Perseverance to successfully record the sound of dust devil as it flowed overhead.

I have embedded a video of the recording below. The research paper can be read here.

Dust devils on Mars, while much less dense in its very thin atmosphere, are generally much larger than found on Earth.

The dust devil recently detected by Perseverance was 25 meters wide and 118 meters tall (82 feet by 387 feet), putting it squarely in the average zone in terms of size for Martian dust storms. But they can grow much bigger, too, as dust on Mars can be whipped up in huge global dust storms.

The data also picked up the sound of dust particles hitting the microphone, which will allow the scientists to measure the density of the devil.
» Read more

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France orders Eutelsat to stop broadcasting Russian channels

9:13 am

Arcom, the French television regulation agency, yesterday ordered the communication satellite company Eutelsat to stop allowing three Russian channels from broadcasting using the satellites.

In a news release, Arcom said the television stations’ coverage of Russia’s war in Ukraine “include repeated incitement to hatred and violence and numerous shortcomings to the honesty of the information.” Eutelsat said in a brief statement that “it will no longer be involved in the broadcasting of the three sanctioned channels within the prescribed time-frame.”

Arcom’s decision comes a week after France’s top administrative court, prompted by a request from the Paris-based Reporters Without Borders advocacy group, ordered Arcom to review an initial decision to permit Eutelsat to continue carrying the stations.

Arcom’s claim, that it made this order because of the content of the broadcasts, is another example of the blacklisting/censorship culture we now live in. The French regulators could have simply stated that, as an ally of the Ukraine in the Russian-Ukraine war, it does not want French-regulated satellites to provide aid to the Russian side. There is a war going on, and this alone is a rational reason to block the Russian channels.

Instead, Arcom uses censorship as its justification. It doesn’t like what the Russians are saying, and therefore has the right to censor them. Remember this argument, because in the future Arcom will likely use it again, but next time against any one of the other broadcast channels under its control that simply says something it doesn’t like.

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China launches classified remote sensing satellite

8:57 am

Using its Long March 2D rocket, China last night successfully launched a classified remote sensing satellite into orbit.

The launch was from an interior spaceport. No word on where the first stage crash-landed.

The leaders in the 2022 launch race:

59 China
56 SpaceX
21 Russia
9 Rocket Lab
8 ULA

The U.S. still leads China 80 to 59 in the national rankings, but now trails the entire world combined 90 to 81.

Though SpaceX led China in successful launches for most of the year, China historically tends to do a lot of launches in the November-December time period. This is why it has surged ahead in the past month. SpaceX can still catch up, however, as it still has five launches planned for 2022. Either way, we will not know who comes out ahead until probably the end of the year.

That a private American company however has even a chance of beating out the entire world in annual launches is quite remarkable, whether or not SpaceX ends up ahead.

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Soyuz manned capsule docked to ISS is apparently leaking something

9:13 pm

A spacewalk today was cancelled when it was suddenly noticed that some unknown substance was leaking from one of the Soyuz manned capsules docked to ISS.

During preparations for this evening’s planned spacewalk by Roscosmos cosmonauts Sergey Prokopyev and Dmitri Petelin, ground teams noticed significant leaking of an unknown substance from the aft portion of the Soyuz MS-22 spacecraft docked to the Rassvet module on the International Space Station. The spacewalk has been canceled, and ground teams in Moscow are evaluating the nature of the fluid and potential impacts to the integrity of the Soyuz spacecraft, which carried Prokopyev, Petelin, and NASA astronaut Frank Rubio into space after launching from the Baikonur Cosmodrome in Kazakhstan on Sept. 21.

The big question is whether this leak will impact the capsule’s function as a lifeboat or a return vehicle for the three astronauts it brought into space. If so, then an empty manned capsule needs to be launched, either by the Russians or SpaceX, though if the latter someone would have to pay the cost.

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December 14, 2022 Quick space links

4:28 pm

Courtesy of stringer Jay, whose help is making BtB much better.

 

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Scientists publish papers describing largest Mars quake from May

1:56 pm

Location of May quake

Though news of the largest quake so far detected by InSight on Mars, magnitude 4.7, was released in May, this week the science team published two papers describing the quake itself and what they have learned from it. From the press release:

The waves from the record-breaking quake lasted about 10 hours — quite a while, considering no previous Marsquakes exceeded an hour.

It was also curious because the epicenter was close to but outside the Cerberus Fossae region, which is the most seismically active region on the Red Planet. The epicenter did not appear to be obviously related to known geologic features, although a deep epicenter could be related to hidden features lower in the crust.

Marsquakes are often divided into two different types — those with high-frequency waves characterized by rapid but shorter vibrations, and those of low-frequency, when the surface moves slowly but with larger amplitude. This recent seismic event is rare in that it exhibited characteristics of both high- and low-frequency quakes. Further research might reveal that previously recorded low- and high-frequency quakes are merely two aspects of the same thing, Kawamura said.

The green-dotted white patch on the map above marks the approximate location of this quake, east of where most of the previous larger quakes have been detected and under the Medusa Fossae Formation of volcanic ash. That no surface features appear to correspond to this quake, it is thought it was the result of a shift of underground features.

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The first launch of China’s Zhuque-2 rocket ends in failure

1:31 pm

The first launch of China’s Zhuque-2 rocket, built by the pseudo-private company Landspace, ended in failure today when the upper stage had problems after separation of the first stage.

Apparent spectator footage posted on Chinese social media showed the rocket ascending into clear skies, trailed by white exhaust. While the first stage is understood to have performed well, separate apparent leaked footage suggests that issues affecting the rocket’s second stage resulted in the failure of the mission.

Data suggest an expected burn of the stage’s vernier thrusters, intended to carry the stage and payloads into orbit after a burn by the main engine, did not occur as planned.

If this launch had been successful, it would have made the Zhuque-2 rocket the first rocket to reach orbit using methane as a fuel, beating three different American companies, SpaceX, Blue Origin, and Relativity.

Relativity has been preparing for the first launch of its Terran-1 rocket since October, with a goal of launching before the end of the year. At the moment however no launch date is set, though the company’s CEO seems confident it will launch soon.

In addition, SpaceX has also been targeting the first orbital launch of its Starship/Superheavy rocket by the end of this year. As with Relativity, no launch date has been set.

The first launch of Blue Origin’s New Glenn rocket meanwhile is nowhere in sight, as yet. It was originally supposed to launch in 2020, but even now has four launches scheduled on its manifest for 2023. None however have been scheduled, and the first launch will likely slip to late in the year, if that soon.

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Today’s blacklisted American: Book touting Judeo-Christian values blacklisted from libraries

1:03 pm

Kirk Cameron, blacklisted

They’re coming for you next: Librarians across America — the same ones running drag queen storybook hours with little kids — are routinely blacklisting television actor Kirk Cameron from doing his own library event reading his own book, As You Grow, because it tries to teach children traditional Judeo-Christian values.

It is common for community libraries to run story-hour programs for kids and parents that correspond with the release of a new book. In recent years, libraries have come under fire for promoting drag queens and other LGBTQ+ centric story hours for young children. It now appears to be the case that those same libraries, which are largely funded by taxpayers, have decided there is no space in their programming lineups for more traditional and faith-based titles.

Cameron’s book, As You Grow, ‘teaches biblical wisdom and the value of producing the fruit of the spirit: love, joy, peace, patience, kindness, goodness, gentleness, faithfulness, self-control,’ according to the author.

You can buy Cameron’s book here.
» Read more

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Curiosity looks down Gediz Vallis

12:03 pm

Curiosity's looks down Gediz Vallis
Click for original image.

Overview map
Click for interactive map.

The panorama above was taken by Curiosity’s right navigation camera today, December 14, 2022, looking down into Gediz Vallis, the giant slot canyon that the rover will use as its route up Mount Sharp.

The red dotted lines above and on the overview map to the right indicate approximately the planned route for Curiosity. The yellow lines indicate the approximate area covered by the panorama above.

At present the scientists are attempting to drill into the marker band on which Curiosity sits. This marker layer is visible at many places at about the same elevation on all sides of Mount Sharp’s flanks. The white arrows indicate other examples of it in this overview map. It generally appears smooth and flat, which suggests it is made of a harder substance more resistant to erosion. That hardness was confirmed when Curiosity’s first drill attempt into it last week failed. The scientists are now trying again.

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Juno snaps heat image of Jupiter’s volcano-covered moon Io

10:24 am

Io's volcanoes
Click for full image.

The image to the right, cropped and reduced to post here, was taken on July 5, 2022 by one of the infrared instruments on the Jupiter orbiter Juno of the moon Io, known for having many many active volcanoes.

This infrared image was derived from data collected by the Jovian Infrared Auroral Mapper (JIRAM) instrument aboard Juno. In this image, the brighter the color the higher the temperature recorded by JIRAM.

Each bright spot is an active volcano, some of which have been in the past photographed during eruptions. In fact, the first such photo was taken in March 1979 by the Voyager-1 spacecraft just after its fly-by of Jupiter, and was the first time any active volcano outside of Earth had ever been identified.

What made that discovery more profound was that only a week earlier scientists had published a paper predicting active volcanoes on Io, caused by the strong tidal forces from Jupiter’s gravity.

Since then planetary scientists have been studying Io’s volcanism repeatedly, tracking the evolution of specific volcanoes over time as they erupt and then become dormant.

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Space Force and South Korea set up joint office to monitor North Korea

9:37 am

The U.S. Space Force has now partnered with a new South Korean Air Force space division to jointly monitor the space-based and military actions of North Korea, including its increasingly aggressive missile testing program.

From the first link:

[Brig. Gen. Anthony Mastalir, commander of the U.S. Space Forces Indo-Pacific.] later told reporters the unit will undergo analysis in the coming months to assess its mission capabilities and said it is interested in holding discussions with South Korea regarding specific future missions, like missile warning and defense.

The new unit is expected to help monitor, detect and trace projectiles from the North and elsewhere in an operation likely to reinforce overall deterrence capabilities of the South Korea-U.S. alliance, observers said.

This new office really isn’t anything new, simply the renaming and reshuffling of the military bureaucracy from the American Air Force to the Space Force. The military has been present in South Korea since the Korean War in the early 1950s, monitoring North Korea. All that has really changed is North Korea’s growing ability to launch missiles, thus changing the focus of that monitoring, combined with South Korea’s recent effort to accelerate its own space effort, both civilian and military.

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