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May 9, 2023 Quick space links

4:26 pm

Courtesy of BtB’s stringer Jay.

 

 

 

 

5 comments

Pushback: School board forced to restore contract it tried to cancel because it hates Christians

1:36 pm

School board member Tamillia Valenzuela's official picture
School board member Tamillia Valenzuela’s official
picture, with cat ears, nose ring, and green-dyed hair.

They’re coming for you next: When the school board for the Washington Elementary School District School in the Phoenix area unilaterally canceled a legal contract with Arizona Christian University in March, the university sued [pdf], claiming that the cancellation was solely for religious reasons and was discriminatory and a clear violation of its contract.

The school board has now settled that lawsuit, agreeing to restore the contract while also accepting liability for all legal costs in connection with the suit.

It is important to understand the exact reasons the board voted unanimously to cancel the contract. Under that agreement, which had existed for more than a decade, students from Arizona Christian University would act as free teaching assistants for the district’s elementary schools while getting real world experience in teaching. Their work was determined by the school, and during that time there was never a complaint about them attempting to indoctrinate children into Christianity (even as the queer community now pushes its queer agenda to children in schools continuously).

When the board canceled the contract, it did so by declaring unequivocally the university’s religious affiliation was the problem, not because it had failed in any of its contract obligations. More specifically, at least two members of the school board — proud members of the queer community — expressed strong intolerance with the university’s Christian beliefs, and wanted the contract cancelled for this sole reason. As board member Tamillia Valenzuela said at the February board meeting where the cancellation vote was taken:
» Read more

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Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

The print edition can be purchased at Amazon, any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

Jupiter’s clouds in 3D

12:37 pm

Jupiter's clouds in 3D
Click for original image.

Another cool image! The picture to the right, cropped and reduced to post here, was created by a team of citizen scientists from a raw Juno image during its 40th close fly-by of Jupiter. From the caption:

Visual interpretation of relief (exaggerated) on Jupiter based on depth estimation from a single image

2D process: Enhanced RGB, enlargement and crop of image taken on 2022-02-25 02:21 UT – perijove 40 – Junocam

Process on 3d image : not based on a DTM, but a visual interpretation of the surface by depth estimation from a single image

The white box on the global image on the upper left marks the approximate area coverd by the oblique 3D picture. Though the vertical relief is greatly exaggerated as well as simulated from a flat image, it provides us a nice sense of the turbulent nature of Jupiter’s more active bands. The larger structures in the colored band appear to act like giant waves in a river rapids. And for reasons not yet understood, the more active areas of that upper atmosphere is divided into bands determined by latitude.

2 comments

Momentus and Astroscale team up to propose Hubble servicing mission

11:29 am

Capitalism in space: The two orbital tug companies Momentus and Astroscale announced today that they have partnered to propose a servicing mission to the Hubble Space Telescope, designed to boost the telescope and extend its life.

The proposed mission concept, a commercial solution to extend the life of this important national asset without risk to humans, includes launching a Momentus Vigoride Orbital Service Vehicle (OSV) to low-Earth orbit on a small launch vehicle. Once on orbit, Astroscale’s RPOD technology built into the OSV would be used to safely rendezvous, approach and then complete a robotic capture of the telescope. Once mated, the OSV would perform a series of maneuvers to raise the Hubble by 50 km. Removal of surrounding and threatening space debris in Hubble’s new orbit using the Vigoride and Astroscale’s RPOD capabilities will be prioritized after the completion of the primary reboost mission.

As I have written repeatedly, Hubble is a telescope that refuses to die. I predicted that come the 2030s, when its orbit had decayed to a point that it either had to be de-orbited (NASA’s preferred option in the past when it ran everything) or be lifted to a higher orbit to extend its life, people would find a way to lift it.

Now that private enterprise is running the show, NASA is taking advantage of that to ask for private solutions to save Hubble, and not surprisingly it is quickly getting them.

4 comments

Conscious Choice cover

Now available in hardback and paperback as well as ebook!

 

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.

 

All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.

 

Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.

Paperwork on Mars

11:20 am

Paperwork on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on April 15, 2023 by the close-up camera on the Mars rover Curiosity. From the caption:

NASA’s Curiosity Mars rover took this close-up view of a rock nicknamed “Terra Firme” that looks like the open pages of a book, on April 15, 2023, the 3,800th Martian day, or sol, of the mission, using the Mars Hand Lens Imager (MAHLI) on the end of its robotic arm. The rock is about an inch across (2.5 centimeters).

Strange looking rocks like this have not been rare during Curiosity’s travels in Gale Crater, though it seems to me that the variety and strangeness has increased as the rover has climbed higher on Mount Sharp. In this case, the tall flake in the center — as well as the shorter flakes to the left — were among the many thin layers seen in this area. These layers however were clearly made of much harder material than the layers above and below. Those weaker layers eroded away over the eons, leaving behind these thin sheets.

Also, if you own red-blue 3D glasses, take a look at the anaglyph here.

3 comments

Space junk removal company ClearSpace signs deal to launch on Vega-C

9:59 am

The European company ClearSpace has signed a launch deal with Arianespace to fly the first test of its space junk removal robot on a Vega-C rocket set to launch some time in the second half of 2026.

The development of ClearSpace’s robot, which will use four grappling arms to surround and then capture its target, was paid for under a European Space Agency (ESA) $121 million contract which also required it to be launched on an Arianespace rocket. The problem right now is that it will fly as a secondary payload, and a primary payload has not yet been found.

Finding that primary payload is going to be difficult. First, Vega-C failed on its second launch last year and has not yet flown again. Second, it is expendable, and though cheaper than Arianespace’s other rocket, Ariane-6 (which has not yet launched), it is still more expensive than other commercial rockets now available. Third, the customer of that primary payload must also want to go into an orbit that will allow ClearSpace’s robot to reach its target, an abandoned Vega Payload Adapter from a previous launch.

As has been typical of Europe, this development is proceeding too slowly and is being hampered by requirements unrelated to profit and loss. By ’26 expect several other space junk removal companies — Astroscale and D-Orbit come to mind — to have already demonstrated their capabilities and already garnering market share, before ClearSpace even flies.

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Leaving Earth cover

Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.

 

If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.

 

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

 
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke

NASA now demolishing the obsolete mobile launch platform used during Apollo

9:42 am

The second of three mobile launch platforms that were used during the Apollo program to transport the Saturn-5 rocket to its launchpad but are all obsolete and no longer in use is finally being demolished for salvage.

The first has already been scrapped, while the third is still in use for “servicing the crawlerway between SLS launches.”

NASA has been storing the platform in the Vehicle Assembly Building, but there was no longer room there, with Boeing taking over more space for assembling SLS core stages. The platform itself was deemed unsafe for display at any museum, with the cost of making it safe too high.

Better to salvage it than have it sit in the way of future space operations. After all, when you get down to it, it is simply some metal and hardware. The history was accomplished by the humans who built it, and who would be appalled if later generations used their work as a club to prevent new achievements in space.

4 comments

Momentus test orbital tug successfully raises orbit using water-ionized thrusters

9:29 am

Momentus’s Vigoride test orbital tug has successfully raised its orbit using a ion thrusters that use water as their fuel, proving that the tug can be used to bring smallsats launched as secondary payloads to their preferred orbits.

According to tracking data, Vigoride-5 is in an orbit at an average altitude of 524.3 kilometers as of late May 7, about two kilometers higher than it was in early April, when the maneuvers started. The vehicle’s orbit had been gradually decaying since its launch in early January on the SpaceX Transporter-6 smallsat rideshare mission, descending about five kilometers before the maneuvers started.

The test of the MET is a major milestone for Momentus, which is relying on the technology to propel its tugs that will deliver satellites to their desired orbits. Technical problems with its first tug, Vigoride-3, launched nearly a year ago, kept the company from testing the MET on that vehicle.

Vigoride-5 is carrying a single smallsat, for Singapore-based Qosmosys, that it will release, although the companies have not disclosed the planned orbit for that spacecraft. The tug will also operate a hosted payload from Caltech to demonstrate space-based solar power technologies for several months.

The company already has another Vigoride in orbit that launched in April, carrying its own set of payloads for orbital transport.

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Webb takes infrared image of the disk of dust and debris surrounding Fomalhaut

4:57 pm

Fomalhaut debris disk as seen in the infrared by Webb
Click for original image.

Using the mid-infrared instrument on the Webb Space Telescope, astronomers have obtained a new high resolution infrared image of the disk of dust and debris that surrounds the star Fomalhaut, and (surprise!) have it to be more complex than they previously believed.

That image is to the right, annotated by the science team.

Overall, there are three nested belts extending out to 14 billion miles (23 billion kilometers) from the star; that’s 150 times the distance of Earth from the Sun. The scale of the outermost belt is roughly twice the scale of our solar system’s Kuiper Belt of small bodies and cold dust beyond Neptune. The inner belts – which had never been seen before – were revealed by Webb for the first time.

The dust cloud identified in the outer ring is possibly left over from a recent collusion of larger bodies.

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May 8, 2023 Quick space links

12:54 pm

Courtesy of BtB’s stringer Jay. I meanwhile am at a space symposium in Tucson today, so posting has been light. I should be home in time to do some work later this afternoon.

  • Virgin Galaxtic to resume flights in May

    • The company is calling the May flight, carrying two Italian astronauts and delayed more than two years, its final checkout prior to beginning commercial flights in June..

 

 

 

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Sinuous ridge inside Martian canyon

9:25 am

Sinuous ridge inside a Martian canyon
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on February 7, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the camera team labels a “sinuous ridge within valley.”

The location is at 30 degrees south latitude, right on the edge of the southern of the two 30-60 degree mid-latitude bands where orbital images show many glacial features. Closer to the equator and there is little or no evidence of near surface ice on Mars. Farther from the equator from this latitude and the evidence of near surface ice increases, becoming very dominant the closer to the poles you get.

At this spot, it appears there is little near surface ice. The channel has ripple sand dunes inside it, and the sinuous ridge appears to be bedrock. Similarly, the plateau above the channel also appears like bedrock, the craters showing no evidence of splatter that is common where there is near surface ice.

What made the channel? And what made that a sinuous ridge inside it?
» Read more

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China’s X-37B copy lands successfully after 276 days in orbit

8:35 am

China’s reusable mini-shuttle, essentially a copy of Boeing’s X-37B, has completed its second flight, landing in China on a runway after 276 days in orbit.

The project will provide a more convenient and inexpensive way to access space for the peaceful use of space in the future, according to the statement.

The reusable test spacecraft launched from Jiuquan Satellite Launch Center in the Gobi Desert Aug. 4 (UTC), 2022. The spacecraft released an object into orbit, U.S. Space Force tracking data revealed late last year. The small satellite operated in very close proximity to the spaceplane.

This apparent second flight on the secretive spacecraft differs from its first mission in 2020. That flight saw the spaceplane orbit for four days.

During the flight the spaceplane made numerous orbital maneuvers.

Like the X-37B, this reusable mini-shuttle allows China to do many technology experiments in orbit and then return them to Earth for analysis.

4 comments

Rocket Lab successfully launches two NASA hurricane monitoring cubesats

6:11 pm

Rocket Lab’s Electron rocket today successfully placed NASA’s two Tropics hurricane monitoring cubesats into orbit, lifting off from New Zealand ((May 8th New Zealand time).

This is the first of two Rocket Lab launches to get the entire four-satellite Tropics constellation into orbit, with the second schedule for two weeks from now.

The leaders in the 2023 launch race:

29 SpaceX
16 China
6 Russia
4 Rocket Lab

American private enterprise now leads China 33 to 16 in the national rankings, and the entire world combined 33 to 28.

One comment

May 5, 2023 Quick space links

4:48 pm

Courtesy of BtB’s stringer Jay, who has also noticed, as I have, that the news in commercial space has been slow this week.

 

 

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The modern corrupt legislative way of doing business: Know nothing, fund everything!

1:57 pm

Fill it in with any amount, regardless of facts
It doesn’t matter how much money is in the government treasury,
our government will fill this check out anyway, to the max.

This week the Democrat-controlled legislature of the state of California passed a bill allocating $150 million dollars from which cash-strapped hospitals could obtain loans to help pay their bills.

The state will give out the $150 million in the form of interest-free loans to nonprofit or public hospitals that meet certain conditions. The state will prioritize loans for medical centers in rural areas and those that have a disproportionate number of patients on Medicaid, the joint state and federal government health insurance program for the poor and the disabled.

Loans will have to be repaid in six years, though it will be possible for the loan to be forgiven if the hospital meets certain requirements.

In another news report describing the process in which this bill was approved and passed included one particular quote that illustrated magnificently the modern manner in which almost all American legislatures now function, from small city councils to Congress in Washington, regardless of party. As stated by one state senator during preliminary hearings before the bill passed:

“We don’t know how many hospitals, we don’t know which hospitals. We don’t know which areas those hospitals are (in), we don’t know anything. And now we’re asked to approve $150 million to be doled out without access to plans, without access to the finances that would give us the evidence to feel comfortable with this,” said Sen. Maria Elena Durazo, a Los Angeles Democrat, during a Senate budget committee hearing on Tuesday. [emphasis mine]

» Read more

21 comments

Brain terrain on top of Martian mountains

12:28 pm

Brain terrain at high elevation on Mars
Click for original image.

Cool image time! The picture to the right, cropped and reduced to post here, was taken on March 26, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It is labeled by the scientists “Brain Terrain on Floor of Crater in Warrego Valles.”

Brain terrain is a geological feature entirely unique to Mars that remains unexplained in any way by geologists. The scientists know it is almost certainly related to near-surface ice and its sublimation into gas, but their theories as to its precise formation process remain incomplete and unconvincing, even to them.

In this case the brain terrain’s interweaving nodules seem to show flow patterns, but strangely those patterns go around depressions and hollows. Yet, the overall flow direction also seems to point downhill towards the slope on the image’s right edge.
» Read more

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Hubble captures shadows on star’s outer accretion disk cast by inner accretion disk

11:07 am

Shadows cast on star's accretion disk
Click for original image.

Astronomers using the Hubble Space Telescope’s images taken five years apart have captured the changing shadows cast by a star’s inner accretion disk onto its outer accretion disk.

Those images are to the right, reduced and rearranged to post here. From the caption:

Comparison images from the NASA/ESA Hubble Space Telescope, taken several years apart, have uncovered two eerie shadows moving counterclockwise across a disc of gas and dust encircling the young star TW Hydrae. The discs are tilted face-on as seen from Earth and so give astronomers a bird’s-eye view of what’s happening around the star.

The [top] image, taken in 2016, shows just one shadow [A] at the 11 o’clock position. This shadow is cast by an inner disc that is slightly inclined to the outer disc and so blocks starlight. The picture on the [bottom] shows a second shadow that emerged from yet another nested disc at the 7 o’clock position, as photographed in 2021. What was originally the inner disc is marked [B] in this later view.

The shadows rotate around the star at different rates like the hand on a clock. They are evidence for two unseen planets that have pulled dust into their orbits. This makes them slightly inclined to each other. This is a visible-light photo taken with the Space Telescope Imaging Spectrograph. Artificial colour has been added to enhance details.

An artist’s conception of the system, as seen from an oblique angle, is available here. All told, this solar system of disks kind of resembles a spinning gyroscope, with its different rings tilted at different angles to conserve angular momentum.

2 comments

Celestis recovers astronaut’s remains from suborbital rocket explosion

10:06 am

Celestis, the company that specializes in sending people’s ashes into space, has successfully recovered the remains of a former Apollo astronaut Philip Chapman (who never flew in space) after the suborbital rocket they were on exploded four seconds into flight.

“All 120 flight capsules are safely in the hands of launch personnel and will be returned to us awaiting our next flight as soon as UP and Spaceport America complete their investigation and any required fixes are implemented,” Celestis said in a statement on Wednesday. The recovered payloads are set to fly again on board the company’s upcoming Perseverance Flight. The company said it only launches a “symbolic portion” of ashes or DNA sample from its participants.

Celestis has sent remains of many celebrities as well as ordinary customers on a number of orbital and suborbital flights over the years. The recovery of the remains and their expected reflight in this case enhances its business model, since none of its customers want their ashes lost in a rocket failure, before reaching space.

4 comments

Lockheed Martin reorganizes its space divisions to better compete in the new commercial market

9:58 am

Lockheed Martin today announced that it is reorganizing its space divisions to make them better aligned with the new commercial market, and thus better able to win market share.

The company will streamline its operation from “five lines of business to three,” the first focused on commercial space, the second focused on classified military projects, and the third focused on military missile work.

As a big space company, Lockheed Martin has made a great effort in recent years to break into the commercial rocket industry. It was a major investor in Rocket Lab, and is also a major investor in the rocket startup ABL, which it is sending a lot of business. It also realigned its satellite construction business to focus on smallsats, including investing a lot of money in the smallsat company Terran Orbital.

This reorganization is clearly an effort to underline these changes. Whether it will work remains to be seen. Often such reorganizations in big older corporations end up being nothing more than rearranging the deck chairs on the Titanic.

2 comments

ESA finally admits — sort of — that private enterprise can do it better

9:48 am

Stephane Israel, the architect of ESA's rocket failure
Stéphane Israël, the head of Arianespace and the
architect of its failure to compete in the field of rocketry.

Today there was a news report in which Stéphane Israël, the head of Arianespace, kind of admitted at last that the expendable design of Europe’s new Ariane-6 rocket was a mistake, and that it will take a decade more to fix it.

“When the decisions were made on Ariane 6, we did so with the technologies that were available to quickly introduce a new rocket,” said Israël, according to European Spaceflight.

He added that it will not be until the 2030s before Europe begins flying its own reuseable rocket.

Israël’s comments illustrate the head-in-the-sand approach he has exhibited now for decades. He claims the European Space Agency (ESA) chose to make Ariane-6 expandable so that it would be ready quickly, but its development has not been fast, and in fact is now more than three years behind schedule. When it finally begins flying operational it will have taken almost a decade to create it.

His comments also are his lame attempt to push back against a recent ESA report [pdf], issued in late March, that strongly rejected the decades-long model that ESA has used to build its rockets. Up until now and including the construction of Ariane-6, ESA designed and built its rockets, using Arianespace, headed by Israël, as its commercial arm. In other words, the government ran the show, much like NASA did for most of the half century following the 1960s space race. The result was slow development, and expensive rockets. Arianespace for example never made a profit in its decades-long existence, despite capturing half the commercial market in the 2000s and early 2010s.

The March ESA report rejected this model, and instead advocating copying what the U.S. has done for the past half decade by shifting ownership and design to the private sector, as advocated in my 2017 policy paper, Capitalism in space. To quote the ESA report:
» Read more

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Hozier & Annie Lennox – Take Me to Church / I Put a Spell on You

6:01 pm

A evening pause: Performed live 2015.

Hat tip Doug Johnson. Note too that this does not come from youtube, but from metatube. Let’s find more alternative video resources like this, just to increase some competition.

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May 4, 2023 Quick space links

3:43 pm

Courtesy of BtB’s stringer Jay.

 

 

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Weird dome near Starship candidate landing zone on Mars

1:47 pm

Weird dome near Starship candidate landing zone on Mars
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on February 27, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label as domes in Arcadia Planitia, one of the many large northern lowland plains of Mars.

This to me is a “What the heck?” image. I won’t dare try to explain the warped concentric ringed pattern at the top of the mesa, nor the bright and dark splotch that surrounds it. The small craters around it appear to have glacier material within them, and the terrain here likely has a lot of near surface ice, being at 37 degrees north latitude in a region where the data suggests such ice exists. The different colors here likely indicate the difference between dust (orange) and coarser material (aqua).

The location, as shown in the overview map below, makes this mesa more tantalizing.
» Read more

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Today’s blacklisted American: Biden administration threatens to shut down Catholic hospital system because of a candle

12:36 pm

The evil candle that must be snuffed out!
The evil candle that the Biden administration insists must be snuffed out,
or else the hospital must close.

They’re coming for you next: Because the Saint Francis Health System in Oklahoma has always kept a single candle lit in its hospital chapels, Biden administration officials are now threatening to shut down five Catholic hospitals in Oklahoma, citing federal government fire safety requirements.

If Saint Francis does not comply, the government will revoke its ability to obtain any Medicare, Medicaid, and the Children’s Health Insurance Program (CHIP) payments for treating patients, in essence blocking those patients from healthcare while threatening the entire Saint Francis Health System with bankruptcy.

In response, the Becket Fund for Religious Liberty (as legal representative of St. Francis) sent a letter [pdf] in protest, noting that the Biden administration’s goal has nothing to do with fire safety, but to censor and squelch the religious practice of the St. Francis Health System:
» Read more

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Two interacting galaxies, both with active supermassive black holes at their center

10:20 am

Interacting galaxies
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. From the caption:

This new image from NASA’s Hubble Space Telescope shows interacting galaxies known as AM 1214-255. These galaxies contain active galactic nuclei, or AGNs. An AGN is an extraordinarily luminous central region of a galaxy. Its extreme brightness is caused by matter whirling into a supermassive black hole at the galaxy’s heart.

Hubble observed the galaxy [on the right] as part of an AGN survey, with the aim of compiling a dataset about nearby AGNs to be used as a resource for astronomers investigating AGN physics, black holes, host galaxy structure, and more.

Note how the outer arms of both galaxies appear warped, with long streams of stars being pulled towards the other galaxy. Imagine living on a planet orbiting one of those stars as it finds itself over time farther and farther from its home galaxy, out in the vast emptiness of intergalactic space. While this sounds lonely, it has advantages for life, because isolated from the galaxy the star will not be threatened by supernovae, gamma ray bursts, and the host of other events that happen inside galaxies that can threaten biology.

It also means your night sky will be heralded by the rising and setting of two nearby giant galaxies.

5 comments

Two Russian astronauts shift airlock on ISS during 7-hour spacewalk

9:58 am

With the help of the new European robot arm on the Russian half of ISS, two Russian astronauts completed a 7-hour spacewalk yesterday, successfully shifting a Russian airlock module to the new Nauka module on ISS.

The cosmonauts began their spacewalk at 11:01 p.m. Moscow time on Wednesday and spent seven hours and ten minutes outside the International Space Station (ISS). The main objective of their extravehicular activities was to transfer an airlock from the Rassvet module to the Nauka multi-purpose laboratory module. It was done with the help of the ERA robotic arm under the remote control of cosmonaut Andrey Fedyaev, who stayed aboard the ISS.

The work is part of an ongoing series of spacewalks required to complete the installation of Nauka to the station.

3 comments

Maxar sale closes and company goes private

9:44 am

With the purchase today for $6.4 billion of the satellite company Maxar by two private investment firms, its stock was removed from the NY stock exchange and is no longer traded publicly.

The company was acquired for $53 per share by the U.S. private equity firm Advent International and minority investor British Columbia Investment Management Corp. in a deal announced in December. “With the closing of the transaction, Maxar will remain a U.S.-controlled, owned and operated company,” the company said. Maxar’s common stock will also be delisted from the Toronto Stock Exchange.

Maxar started trading on the New York Stock Exchange and the Toronto Stock Exchange in 2017. It officially became a U.S. corporation in 2020 when the company spun off the Canadian subsidiary MDA.

The desire of these private investors to spend so much strongly indicates that Maxar has real value. It also indicates indirectly the strength of the emerging new commercial launch market. These investors clearly believe that this launch market will continue to grow and force the launch price of its satellites to go down.

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