Year: 2023

A verde valley on Mars

12:59 pm

A verde valley on Mars
Click for original image.

In the southwest where I live, a valley dubbed “verde” (which means “green” in Spanish) is generally a place with a somewhat persistent river with lots of lush plant life. The Verde Valley in Arizona is the perfect example, with “close to 80% of the valley’s land … national forest.”

On Mars there is also a verde valley, but the name is not descriptive in the least. The picture to the right, rotated, cropped, and reduced to post here, was taken on January 22, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO) and shows one section of the Martian Verde Vallis, draining south to north.

The dark rippled patches inside this shallow canyon are sand dunes. In fact, though MRO has not taken many high resolution images of Verde Vallis, every one shows the valley with further patches of ripple dunes. See for example this image of a section of the valley just a bit farther north.
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Pushback? University of North Carolina pretends to ban ‘diversity, equity and inclusion’ requirements in hiring

11:51 am

Failure Theater!

They’re coming for you next: On February 23, 2023 the board of governors of the University of North Carolina voted to ban all requirements that applicants in hiring and admissions make statements advocating the racist political agenda of “diversity, equity and inclusion” [DEI].

The board stated the university “shall neither solicit nor require an employee or applicant for academic admission or employment to affirmatively ascribe to or opine about beliefs, affiliations, ideals, or principles regarding matters of contemporary political debate or social action as a condition to admission, employment, or professional advancement,” according to the resolution. An employee or applicant also can’t “be solicited or required to describe his or her actions in support of, or in opposition to, such beliefs, affiliations, ideals, or principles.”

According to the now-banned policy [pdf], anyone who wanted to either go to UNC as a student, or be hired or promoted there as a teacher, had to prove they had made a “positive contribution to DEI efforts.”
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Blobs and jellyfish in space

10:00 am

Blobs and Jellyfish
Click for original image.

Cool image time! The picture to the right, cropped and reduced to post here, was taken by the Hubble Space Telescope and released today.

The galaxy JW100 features prominently in this image from the NASA/ESA Hubble Space Telescope, with streams of star-forming gas dripping from the disc of the galaxy like streaks of fresh paint. These tendrils of bright gas are formed by a process called ram pressure stripping, and their resemblance to dangling tentacles has led astronomers to refer to JW100 as a ‘jellyfish’ galaxy. It is located in the constellation Pegasus, over 800 million light-years away.

Ram pressure stripping occurs when galaxies encounter the diffuse gas that pervades galaxy clusters. As galaxies plough through this tenuous gas it acts like a headwind, stripping gas and dust from the galaxy and creating the trailing streamers that prominently adorn JW100. The bright elliptical patches in the image are other galaxies in the cluster that hosts JW100.

The image was part of a research project studying star formation in the tendrils of jellyfish galaxies.

The blob near the top of the image is another galaxy in this same galaxy cluster. It is an elliptical galaxy that also happens to have two central nuclei, caused when two smaller galaxies merged. The central regions of each have not yet merged into one.

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SpaceX launches two SES communication satellites

5:50 pm

Only a few hours after SpaceX launched 52 Starlink satellites from California, the company successfully launched two communications satellites for the Luxembourg company SES, using its Falcon 9 rocket launching from Cape Canaveral.

The first stage completed its sixth flight, landing safely on a drone ship in the Atlantic. The rocket’s two fairings completed their third and seventh flights, respectively.

The leaders in the 2023 launch race:

19 SpaceX
11 China
4 Russia
2 Rocket Lab

American private enterprise now leads China 21 to 11 in the national rankings of this year’s launches, and the whole world combined 21 to 17. SpaceX by itself is tied with the rest of the world, including other American companies, 19 to 19.

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Starship launch still stalled by FAA

3:47 pm

According to a tweet by Elon Musk today, Starship will be ready for its first orbital test launch in a few weeks.

Musk also noted however that SpaceX is still awaiting the FAA’s launch license, and because of this he now expects the launch in the third week in April.

Why it is taking months for the FAA to issue this license is disturbing, and suggests that under the Biden administration the feds are behaving more and more like the incompetent Civil Aviation Authority in the UK, which stonewalled Virgin Orbit’s launch for months so that the company now sits on the verge of bankruptcy.

Hat tip to BtB’s stringer Jay for this story, who will be gone for the next two weeks on vacation. Have fun Jay.

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Pushback: Smithsonian ordered to no longer violate the First Amendment

3:36 pm

The evil hat that Air & Space banned
The evil hat that Air & Space officials banned

Pushback: The Smithsonian Institution, which runs the Air & Space museum as well as other museums in Washington, D.C., has been ordered by the courts to stop violating the First Amendment, as it did when on January 20, 2023 it harassed and ejected students from a pro-life group, there as part of their participation in the annual March for Life demonstration, because they were wearing wool caps that said “pro-life” on them.

According to the consent order [pdf], the Smithsonian expressed “regret” for the event and promised to “remind all security officers stationed at NASM [National Air & Space Museum] of the rights of visitors.”

The order however does not simply accept the museum’s expression of regret. It specifically enjoins the Smithsonian and its employees “from prohibiting visitors to the Smithsonian’s National Air and Space Museum from wearing hats or other clothing with messages, including religious and political speech” and requires it to distribute the consent order to “all security officers stationed at NASM, as well as other Smithsonian personnel who interact with the public, including volunteers and museum staff, within 7 days.” It also orders the museum to tell its security officers that their behavior on January 20th was wrong.
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SpaceX launches another 52 Starlink satellites

2:58 pm

SpaceX today successfully put another 52 Starlink satellites into orbit using its Falcon 9 rocket launching from Vandenberg Space Force Base in California.

The first stage completed its 8th flight, landing on a drone ship in the Pacific.

A second SpaceX launch today, this time from Cape Canaveral, Florida, is set to launch very shortly, so the leader board for the 2023 launch race will also change as well:

18 SpaceX
11 China
4 Russia
2 Rocket Lab

American private enterprise now leads China 20 to 11 in the national rankings, and the entire globe combined 20 to 17. SpaceX now trails the entire world, including American companies. 18 to 19.

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The ubiquitous presence of ice in the Martian mid-latitudes

1:01 pm

Ice in the Martian mid-latitudes
Click for original image.

Cool image time! The picture to the right, rotated, cropped, rotated, and sharpened to post here, was taken on November 28, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled merely as a “crater with mesa”, it gives us another example of the presence of glacial ice in the mid-latitudes of Mars.

That mesa is what planetary scientists have labeled “concentric crater fill,” a glacial feature found in numerous craters throughout the mid-latitude bands from 30 to 60 degrees latitude. The ground in the terrain surrounding the crater could be also be impregnated with ice, but based on the location as shown in the overview map below, it is just as likely to be lava.

In fact, the location of this particular crater illustrates why concentric crater fill might become the best source of ice for future colonists.
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Both India’s Chandrayaan-3 and Intuitive Machine’s Nova-C lunar landers pass vibration tests

9:21 am


Click for interactive map.

According to separate announcements just released, both India’s Chandrayaan-3 lander/rover and Intuitive Machine’s private Nova-C lunar lander have passed their last ground tests and are now ready for launch to the Moon later this year.

India’s space agency ISRO successfully completed testing of its Chandrayaan-3 lunar lander/rover in early March, completing vibration tests of the spacecraft and proving it will be able to survive the stresses during launch. The spacecraft successfully completed radiation testing in February.

ISRO is now targeting June 2023 for Chandrayaan-3’s launch.

Intuitive Machines meanwhile announced yesterday that its Nova-C lander has completed vibration testing, and is ready for launch later this year.

The map to the right shows the landing sites of these planned landers near the Moon’s south pole (indicated by the white cross), as well as Russia’s long-delayed lunar lander, Luna-25, which is now targeting a July launch.

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Astra asks for more time from Nasdaq before its stock is delisted

8:54 am

The rocket startup Astra has now asked Nasdaq to give it an extra six months beyond the early April deadline to get its stock price above $1 in order to avoid getting delisted from the stock market.

With its share price at $0.42 upon closing Thursday, Astra Chief Financial Officer Axel Martinez wrote in a blog post that the space company formally requested on Monday another six-month window to raise the share price above $1 for 10 consecutive business days as required to stave off a delisting.

It appears the company might be considering a reverse-stock split, whereby stocks are combined with the total number reduced, thus artificially raising the stock price. Nasdaq will consider this tactic an acceptable solution, though it is also considered a last-ditch approach.

Right now Astra is no longer an operational rocket company, having discontinued its Rocket-3 rocket. It says it is developing a new rocket, dubbed Rocket-4, but whether it can get this operational before it runs out of money or gets delisted remains unknown.

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