Unidentified astronaut from recent ISS mission released from hospital

9:54 am

Though NASA’s press release provided little informationto protect the astronaut’s privacy, including his or her name, the unidentified astronaut who was held overnight for observation after returning from a seventh-month stay on ISS mission has now been released from the hospital.

After an overnight stay at Ascension Sacred Heart Pensacola in Florida, the NASA astronaut was released and returned to NASA’s Johnson Space Center in Houston Saturday. The crew member is in good health and will resume normal post-flight reconditioning with other crew members.

This has happened before. Readapting to a 1G environment after months in weightlessness can be difficult, even if one does all the exercises required while in orbit.

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SpaceX yesterday launched another 23 Starlink satellites

5:34 pm

SpaceX yesterday successfully launched 23 more Starlink satellites, its Falcon 9 lifting off from Cape Canaveral in Florida.

While the video link above says 23, a UPI report said the launch placed 22 satellites in orbit. I have no idea which is right, as the number of Starlinks on these launches range from 20 to 23.

The first stage completed its 19th flight, landing on a drone ship in the Atlantic.

The leaders in the 2024 launch race:

105 SpaceX
48 China
11 Russia
11 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 122 to 71, while SpaceX by itself now leads the entire world, including American companies, 105 to 88.

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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

Space News buries the lede

9:42 am

In reporting the information revealed in an audio report of two SpaceX engineers to Elon Musk, Space News completely misses the main reason Musk posted this video.

The focus of Jeff Foust’s report is the technical problems the engineers revealed that occurred during the descent of Superheavy during the last flight. According to them, one particular parameter related to the Raptor engines was one second away from demanding an abort, whereby the rocket would not attempt to be captured by the tower chopsticks but instead crash along side it. In addition, these engineers reported the worrisome consequences when a chine on the booster ripped off shortly before landing.

All interesting, but the real reason Elon Musk posted this clip from a much longer audio report is what one engineer says about two thirds of the way through:

Given that that is the first launch [#6] in a long time — well, really, ever — that we’ve not been FAA driven, we’re trying to go do a reasonable balance of speed and risk mitigation on the booster, specifically.

Musk wished everyone to know without question the perspective of his employees when it comes to the red tape of the FAA. It hasn’t been our imagination. For the past three years the FAA has determined the test schedule, slowing it down significantly while costing SpaceX a lot of money.

Space News, which generally has been in the tank for the regulators and the FAA, puts this quote to the very end of its article, almost as an aside. I suspect the outlet would have liked to leave it out.

I have posted the video below, so my readers can listen at their leisure.
» Read more

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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 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.

One unidentified astronaut hospitalized after return to Earth today

9:04 pm

Though NASA has released very little information, including the indentity of the astronaut, one of the four crew who were brought back to Earth early today has ended up in the hospital.

NASA said Friday one its astronauts is in a hospital in Florida for medical observation after a “normal” predawn splashdown in the Gulf of Mexico inside a SpaceX capsule.

The mission’s other three crew members were cleared to return to their home base at Johnson Space Center in Houston after their own medical evaluations, NASA said.

The hospitalized astronaut “is in stable condition and under observation as a precautionary measure,” a NASA spokesperson said in a statement. The agency did not identify the astronaut or provide any more details about their condition, citing medical privacy protections.

That the other three astronauts returned to their home base at Johnson in Houston strongly suggests the hospitalized astronaut is the one Russian, Alexander Grebenkin, Normally Russians head back to Russia relatively quick after landing.

This remains speculation. We will have to wait for more information.

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October 25, 2424 Quick space links

6:12 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

  • NASA delays decision of cutting budgets for both Chandra and Hubble
    No surprise, The announced cuts were originally announced to apply pressure on Congress to fund both telescopes. With the election upcoming the agency wants to get Congress on their side. Cutting these popular telescopes just before the election will not servie its insterets.
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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

Gina Lollobrigida – Pagan dance

6:01 pm

An evening pause: I think this makes a great start to the weekend. Clips from the 1959 movie Solomon and Sheba, centered on Gina’s pagan dance as Sheba, and edited to a piece of music by Dead Can Dance, called Cantara, which the youtube website labels “genuinely pagan music.” If you want to see the original film, go here and go to about 90 minutes. In the original, God steps in to stop all this hanky-panky.

Hat tip Judd Clark.

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Taking the day off…

12:19 pm

Yesterday I came down with a head cold, which is draining me of energy. I am going to take a few hours off to take a nap. I should post some more later in the day but don’t expect much.

A sidenote: When I mentioned I had a head cold to someone, the first question that person asked was “Covid?” I laughed and responded, “Who cares? Covid has been nothing more than a cold since around 2021.”

This obsession with Covid has got to stop. From a infectious disease perspective the only valuable thing it taught us is that every new and harsh flu strain that comes through eventually mutates downward utnil it is nothing more than the common cold. Covid did exactly that, no matter how much the Chicken Littles of the world tried to claim otherwise.

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Boeing considering selling its space division

11:55 am

According a Wall Street Journal exclusive today (behind a paywall), the company is now exploring the possibility of selling off its space division.

The NASA business that Boeing is exploring a sale of includes the troubled Starliner space vehicle and operations that support the International Space Station, but excludes the unit building NASA’s Space Launch System, the newspaper reported.

The U.S. planemaker’s shares rose 0.6% in afternoon trading.

Boeing’s space division includes its Starliner capsule and its work on NASA’s SLS rocket, as well as building many of the modules on ISS and operating it for NASA.

If this is so, it appears the new CEO, Kelly Ortberg, has decided that in order to get the company back on track it needs to focus on Boeng’s first and central business, building airplanes. Space is a distraction that is not helping the company bottom line right now in any way. Furthermore, NASA in 2020 told Boeing it would not entertain any new project bids from the company because its past bids were so poorly conceived. That decision remains in effect now, four years later. Since then Boeing has only have gotten a renewal contract to build more SLS rockets, plus a contract to develop a new airplane wing, but little else.

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Using spectroscopic data, astronomers create 3D map of ancient supernova remnant

10:55 am

Supernova 1181
Click for original image.

Astronomers have now createdsdft a 3D map of the remnant formed by a supernova that occurred in 1181, using detailed spectroscopic data to determing which remnant filaments are moving towards us and which are moving away.

The picture to the right is from figure 1 of their paper, and shows how the filaments radiate out from the center in straight lines, something that is unusual for such remnants. It was taken in 2023 by a ground-based telescope at Kitt Peak in Hawaii. From simple optical data it is impossible however to determine which filaments are in the rear, expanding away from us, and which are in the front, expanding towards us.

To probe the three-dimensional structure of the supernova remnant, the astronomers turned to KCWI, an instrument that can capture multiwavelength, or spectral, information for every pixel in an image. This is like breaking apart the light captured in every pixel into a rainbow of colors. The spectral information enabled the team to measure the motions of the filaments poking out from the center of the explosion and ultimately create a 3D map of the structure. The filament material that is flying toward us shifted toward the blue higher-energy portion end of the visible spectrum (blue-shifted), while light from material moving away from us shifted toward the red end of the spectrum (red-shifted).

…The results showed that the filament material in the supernova is flying outward from the site of the explosion at approximately 1,000 kilometers per second. “We find the material in the filaments is expanding ballistically,” says Cunningham. “This means that the material has not been slowed down nor sped up since the explosion. From the measured velocities, looking back in time, you can pinpoint the explosion to almost exactly the year 1181.”

The 3D information also revealed a large cavity inside the spindly, spherical structure in addition to some evidence that the supernova explosion of 1181 occurred asymmetrically.

Using this data, they were able to create that 3D map, shown below in a coarse animation video.
» Read more

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Sutherland spaceport submits another revised plan to local council

10:41 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea.

We’re from the government and we are here to help you! The long-delayed proposed Sutherland spaceport on the north coast of Scotland has now submitted another revised plan to its local Highlands council for approval.

The amended plans for Sutherland Spaceport include a smaller launch pad and launch services facility, and realigning an access road to avoid an area of deep peat. Highland Council planners said the changes would mean reducing the amount of peat that would have to be excavated by more than half. The soil is seen as important because it absorbs CO2.

Highland councillors meeting next week have been asked to approve the amendments. In a report, officials said the amount of peat to be dug up could be cut from 24,046 cubic metres to 9,895 cubic metres.

This is the second time the spaceport has had to submit revised plans to this council. It did so in December 2023, but apparently the council was not satisfied.

Meanwhile Sutherland’s main launch customer, Orbex, has still not gotten its launch licence from the UK’s Civil Aviation Authority, first applied for in February 2022. Orbex, which has a fifty year lease at Sutherland and has built its rocket factory nearby, had planned to do its first test launch of its Prime rocket two years ago. Didn’t happen.

Adding to these bureaucratic delays, Anders Holch Povlsen, a local billionaire — who is an investor in the Saxaford spaceport on the Shetland Islands — in July 2024 filed what appeared to be an absurd harrasment lawsuit against Sutherland, and this was the second time he had done so.

I think Orbex picked the wrong spaceport horse in this race, and is likely going to be killed by this red tape and opposition.

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The uncertainty of science: New research suggests first image in ’22 of Milky Way’s central black hole is likely not accurate

10:25 am

Sagittarius A*
The original interpretation. Click for full image.

The new interpretaion
The new asymmetrical interpretation. Click for original image.

Surprise, surprise! A new analysis of the data behind the 2022 false-color radio image of the supermassive black hole at the center of the Milky Way, posted to the right, suggests that image was not accurately interpreted from the data.

Astronomers led by the National Astronomical Observatory of Japan (NAOJ) say their analysis points at Sagittarius A* having an elongated accretion disk, as opposed to the ring-like “doughnut” image released in 2022 by an international team called the Event Horizon Telescope (EHT) collaboration.

The EHT image shows a central dark region where the hole resides, circled by the light coming from super-heated gas accelerated by immense gravitational forces.

But a new paper published today in Monthly Notices of the Royal Astronomical Society suggests that part of this appearance may actually be an artefact because of the way the image was put together. … Assistant professor Miyoshi Makoto, of the NAOJ, said: “Our image is slightly elongated in the east-west direction, and the eastern half is brighter than the western half. We think this appearance means the accretion disk surrounding the black hole is rotating at about 60 per cent of the speed of light.” He added: “Why, then, did the ring-like image emerge? Well, no telescope can capture an astronomical image perfectly. We hypothesise that the ring image resulted from errors during EHT’s imaging analysis and that part of it was an artefact, rather than the actual astronomical structure.”

It must be noted that this false color radio image was assembled from eight different radio telescopes across the globe, and to bring the data together required a great deal of massaging. While most astronomers appear to favor the top picture, it is just as likely that the bottom picture is a better representation. Either way, both must be considered in any future studies of Sagittarius A*’s environment and structure.

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Four astronauts complete 7-month mission and return to Earth

9:54 am

In the early hours of the morning today SpaceX’s Endeavour capsule safely splashed down in the Gulf of Mexico near Pensacola, Florida, bringing three Americans and one Russian back from ISS after seven months in orbit.

After launching March 3 on a SpaceX Falcon 9 rocket from NASA’s Kennedy Space Center in Florida, NASA astronauts Matthew Dominick, Michael Barratt, and Jeanette Epps, as well as Roscosmos cosmonaut Alexander Grebenkin, spent 232 days aboard the space station.

Recovery teams from NASA and SpaceX quickly secured the spacecraft and assisted the astronauts during exit. The crew now will head to NASA’s Johnson Space Center in Houston, while the Dragon spacecraft will return to SpaceX facilities at Cape Canaveral Space Force Station in Florida for inspection and refurbishment for future missions.

This completed Endeavour’s fifth flight to ISS, ranging in length from 17 to 235 days in length.

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SpaceX launches reconnaissance satellite for NRO

8:41 pm

SpaceX earlier today successfully launched a reconnaissance satellite for the National Reconnaissance Office (NRO), its Falcon 9 rocket lifting off from Vandenberg in California.

The first stage completed its 21st flight, landing on a drone ship in the Pacific.

The leaders in the 2024 launch race:

104 SpaceX
48 China
11 Russia
11 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 121 to 71, while SpaceX by itself now leads the entire world, including American companies, 104 to 88.

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October 24, 2024 Quick space links

3:20 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

3 comments

But will loyal Democrats actually abandon their beloved party? History says no

2:57 pm

The Democratic Party: Given decades of blind loyalty by its supporters
The Democratic Party: Decades of blind loyalty
by its supporters

This week the publication Issues and Insights had a poll taken of registered Democrats to garner some idea of their overall opinion of the Democratic Party’s sudden back-room deal to dump Joe Biden as presidential candidate and replace him with Kamala Harris. The poll asked whether those polled agreed or disagreed with these three statements:

  • The process the Democratic Party used to select its nominee for President did not yield the strongest candidate.
  • The process the Democratic Party used to select Kamala Harris as its nominee was undemocratic.
  • I lost significant faith in the Democratic Party because it did not disclose Biden’s health issues during the primary process.

For Democratic Party politicians, the results should be disheartening at best. A significant majority of the 1,240 registered Democrats polled agreed with all three statements, with 58% agreeing strongly or somewhat with the first statement, 52% agreeing strongly or somewhat with the second statement, and 54% agreeing strongly or somewhat with the third statement. As noted by Scott Pinsker of PJMedia in analyzing the results:
» Read more

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SpaceX rolls out the next Superheavy for sixth test orbital launch

9:59 am

SpaceX in a tweet on October 22, 2024 announced the roll out to the launch tower of the next Superheavy to be used in the sixth orbital test flight, only nine days after that launch tower had successfully caught a Superheavy at the end of the fifth orbital test flight.

Though no launch date has been announced, the company is clearly wants to do it soon. Though its present launch license allows it go when ready, it remains unclear whether it will get that approval from the FAA when requested. FAA upper management has repeatedly indicated a desire to delay its approvals to SpaceX, and until there is a change in the White House — thus forcing a change in that FAA upper management — there is no reason to expect the agency to change its behavior.

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Spaceport startup SUAS Aerospace signs deal to launch small suborbital rocket from west coast of Ireland

9:49 am

SUAS's proposed spaceport plan
Click for original image.

The Irish spaceport startup SUAS Aerospace has now signed a partnership deal with the Netherlands rocket startup T-Minus Engineering to launch a small suborbital rocket from west coast of Ireland in order to demonstrate the viability of Ireland as a potential spaceport location.

According to this report, “T-Minus will provide its Dart rocket for the launch. Dart stands at 3.5 metres and is capable of carrying payloads of up to 3.5 kilograms to a maximum altitude of 200 kilometres.”

Though SUAS has raised €5 million in private investment capital to push its project to build two launch sites within Ireland, it has not made it clear the exact locations of these sites, other than indicating it wants to place them at two locations on Ireland’s west coast, as shown by the company graphic to the right. I suspect it does not yet have rights to the land, and its lobbying effort is largely focused on getting government help to obtain those rights, either on public or private land.

For example, its press release does not provide any details on where this suborbital launch will occur. I am not even sure the company knows. It might simply arrange some coastal location, simply to make possible this demonstration launch, even if that place is not the actual location of its proposed spaceport.

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JPL unveils website for viewing all high resolution imagery so far taken of Europa

9:29 am

In anticipation of the eventual arrival of Europa Clipper in orbit around Jupiter to begin its close investigation of that planet’s moon Europa, JPL yesterday unveiled a website that allows a view to quickly find and review all the high resolution imagery so far taken of Europa by the Jupiter orbiters, Voyager, Galileo, and Juno.

You can visit the Europa Trek portal website here.

The announcement touts the webpage’s ability to take viewers on “fly-overs” of the terrain, but that’s just a bell and whistle claim of little importance. More significant is the easy access this webpage provides to all that imagery, organized in context with a global map of the planet. Not only can anyone quick find interesting features, you can do so within the global context of the whole planet. In addition, the page provides detailed commentary about each image.

When Europa Clipper arrives this portal will be invaluable in deciphering the significance of every new image and datapoint.

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Boeing forced to take another $250 million charge on Starliner

9:19 am

Because of the continuing problems getting its Starliner manned capsule operational, Boeing has now taken another $250 million charge on the project, raising the total spent of its own money to $1.85 billion.

The company’s original fixed-price contract with NASA to deliver the capsule was $4.2 billion. The bulk of that won’t be paid until Starliner begins flying astronauts commercially, and NASA has now delayed that until 2026 at the earliest. The company’s new CEO, Kelly Ortberg, has now made it clear that he is focused on imposing changes to fix the bankrupt engineering management culture that has caused it so many failures in so many of its recent projects, not just Starlner. In his remarks announcing the company’s third quarter results, he said this:

The trust in our company has eroded. We’re saddled with too much debt. We’ve had serious lapses in our performance across the company which have disappointed many of our customers.

In addressing these issues Ortberg listed a whole range of changes, many of which focused on getting managers more closely involved in design and construction, or as he said, management needs “to be on the factory floors, in the back shops and in our engineering labs.”

Whether he will succeed is unknown. Its factory workers today rejected a new contract offer, continuing their now six-week strike that has halted work on company’s airplane business. In addition, Boeing reported a loss of $6 billion in that third quarter report.

One thing Ortbeg did make clear this week however: Boeing is not walking away from its Starliner contract with NASA. At a minimum it will complete that initial fixed price contract. Whether it will go on to fly more Starliner missions however Ortberg left open. I suspect he remains in negotiation with NASA over this issue.

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Cyprus signs Artemis Accords

8:57 am

Cyprus today officially became the 46th nation to sign the Artemis Accords, its signing coming one day before the already announced planned signing by Chile tomorrow.

Adding both nations to the list, the American-led Artemis Accords alliance now includes the following 47 nations: Angola, Argentina, Armenia, Australia, Bahrain, Belgium, Brazil, Bulgaria, Canada, Chile, Colombia, Cyprus, Czech Republic, Dominican Republic, Ecuador, Estonia, France, Germany, Greece, Iceland, India, Israel, Italy, Japan, Lithuania, Luxembourg, Mexico, the Netherlands, New Zealand, Nigeria, Peru, Poland, Romania, Rwanda, Saudi Arabia, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, the United Kingdom, the United Arab Emirates, the Ukraine, the United States and Uruguay.

Should Donald Trump return to the White House it will be very interesting to watch how this alliance evolves in the coming years. The original goal for the accords when started by the Trump administration was to build an alliance with enough clout to overcome the limitations on private property contained by the Outer Space Treaty. Though this alliance is surely now large enough to force those changes, that goal has been mostly pushed aside by the Biden administration. I suspect a new Trump administration will be able to bring it back to life, with added force due to this alliance’s size.

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Dragon Endeavour undocks from ISS to bring 4 astronauts home

8:48 am

After more than a month delay resulting first from the issues with Starliner and then by poor weather in the splashdown zones, SpaceX’s Endeavour capsule today finally undocked from ISS, with a planned splashdown on October 25, 2024 at approximately 3:29 am (Eastern) off the coast of Florida. I have embedded the live stream of that splashdown below.

The capsules brings home three Americans and one Russian after a seven-month-long mission.
» Read more

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Review of the four private space stations presently under construction

8:41 am

Link here. The review provides a nice summary of the status of all four stations, being built by Axiom, Vast, and consortiums led by Blue Origin (Orbital Reef) and Voyager Space (Starlab).

The article included one piece of new news, based on recent stories suggesting major financial issues at Axiom:

As a result of these issues, the Axiom Station is believed to have been downsized to two modules from the originally planned four. There will be a reduced research capability from this arrangement compared to what was expected. However, it remains to be seen if additional capability can be added after the station becomes operational.

The original plan had been to separate the station from ISS once all four modules were launched. Whether it will be able to do so, flying independent of ISS’s systems with only two modules is unclear.

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SpaceX launches 23 more Starlink satellites

8:34 pm

SpaceX today successfully launched another 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its 18th flight, landing on a drone ship in the Atlantic.

The leaders in the 2024 launch race:

103 SpaceX
48 China
11 Russia
11 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 120 to 71, while SpaceX by itself now leads the entire world, including American companies, 103 to 88.

2 comments

October 23, 2024 Quick space links

3:58 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

  • NASA negotiating with China about research access to Chang’e-5 lunar samples
    The law requires NASA to bring in the FBI in such negotiations to make sure the talks will not release American technology to the Chinese. According to NASA’s administrator Bill Nelson, NASA has not yet done this, but intends to before any samples are delivered to the U.S. In other words, he is violating not only the letter but the spirit of the law, designed to keep China away from American space assets.
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A pointy mesa once washed by theorized Martian ocean

11:09 am

A pointy mesa on Mars
Click for original image.

Today’s cool image returns to the same region yesterday’s cool image visited. The picture to the right, cropped, reduced, and sharpened to post here, was taken on July 21, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It was clearly taken to get a close look at this unusual pointy mesa.

MRO elevation data says this mesa is about 800 feet height. The color difference between the north and south flanks suggests the accumulated presence of dust on the north, suggesting the prevailing winds here come from the northeast and blow to the southwest. This conclusion is reinforced by the dark accumulated dust found in the southwest quadrants of all the crater floors in the full image. The wind blows this dust into the craters, where it gets trapped against the southwest crater wall.

Note the mesa’s wide base, with one crater partly eaten away on its eastern edge. The overall shape of this base suggests that it was carved by some flow coming from the southwest, as indicated by the arrow.
» Read more

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A slight bend in one boom delays NASA solar sail flight

9:07 am

Even though NASA’s solar sail test mission, dubbed the Advanced Composite Solar Sail System (ACSSS), successfully unfolded its giant sail in late August, engineers have not yet reactivated the sail’s attitude control system because they have detected a slight bend in one of the sail’s four booms.

While the solar sail has fully extended to its square shape roughly half the size of a tennis court, the mission team is assessing what appears to be a slight bend in one of the four booms. This likely occurred as the booms and sail were pulled taut to the spacecraft during deployment. Analysis indicates that the bend may have partially straightened over the weeks since boom deployment, while the spacecraft was slowly tumbling.

The attitude control system was turned off as planned during the deployment, allowing the sail to slowly tumble. It has been kept off longer than expected because the tumbling appears to be helping straighten the bend.

Once the control system is reactivated, the mission will then attempt to use the sail to change its orbit, to actually fly in space using sunlight like the wind.

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