Category: Points of Information

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

Houston mission control loses contact with ISS for about 90 minutes

10:25 am

NASA’s mission control in Houston yesterday lost contact with ISS for about ninety minutes during work at the Johnson Space Center, an outage apparently caused or related to upgrade work being done there.

Back-up systems were activated but not used, while communications continued through Russia’s mission control in Moscow. Nor was anyone on the station ever in any danger, according to NASA officials.

The only concern with such an outage would be the many systems on the American half of ISS that are closely controlled and maintained by the ground. On the Russian half the goal has always been to build its station modules so they could run independent of ground operations.

2 comments

A third spaceport approved in Scotland

10:18 am

Despite some local opposition, a third spaceport has been approved in Scotland, allowing up to ten suborbital launches per year.

During launches, a 155m (250km) exclusion zone will be placed on the seas around St Kilda, the world-heritage site and archipelago north west of the site. It will be the third of its kind in Scotland, after spaceports were launched in Sutherland and Shetland.

The project, spearheaded by Comhairle nan Eilean Siar – Western Isles Council – has been met with opposition from locals with more than 1,000 people signing a petition rejecting the plans.

…Comhairle nan Eilean Siar had previously bought Scolpaig Farm for £1m and is developing it with private military contractor QinetiQ alongside space industry firms Rhea Group and Commercial Space Technologies.

It is unclear if the spaceport will eventually upgrade to providing orbital launch facilities. It will also have to compete with the two other spaceports in Scotland, as well as get launch approvals from the UK’s Civil Aviation Authority.

Leave a comment

New Space Force language would give it the power to take over all commercial space assets

10:04 am

A new draft outlining the powers of the Space Force would give it the right to shut down all commercial space activities during any government declared emergency, giving it exclusive control over all space assets, whether built or owned by the government or private companies.

The Space Force’s draft framework for how commercial satellite services could be called up in times of crisis or conflict to support military missions would allow the Defense Department to deny participating companies the right to sell their wares to any other client in times of “war, major conflict, national or international emergency.”

According the draft, the government would also not be required to cover any losses to the companies. In other words, in clear violation of the fifth amendment to the Constitution forbidding the taking of any private property without just compensation, this draft regulation would allow the military to do exactly that. And it won’t require a war, merely a declared emergency, similar to the unjustified emergency declared when COVID arrived.

At this time the draft language has only been issued for industry comment. I suspect the entire space industry will oppose it strenuously. I also expect the government to yield reluctantly, using its financial power to issue major contracts as a wedge to garner some industry compromises.

The result, as with the FCC and the FAA in the two stories below, will be a more powerful administrative state in DC, wielding power the Constitution expressly forbids it to wield.

2 comments

Varda blocked from bringing its capsule back to Earth by FAA

9:49 am

Varda has been forced to delay the first return of its capsule from space, loaded with a drug designed to treat HIV/AIDS that can only be manufactured in weightlessness, because the FAA has so far refused to issue “a re-entry license,” a new regulatory power grab the FAA instituted two years ago supposedly to “streamline the launch and reentry licensing process.”

This new language, which I was unaware of and know of no Congressional act approving it, has done exactly the opposite.

A key issue, he said, is that Varda is the first to seek a reentry license under new FAA regulations known as Part 450. Those regulations were enacted by the FAA more than two years ago to streamline the launch and reentry licensing process.

…For the commercial launch industry, the Part 450 regulations have become an area of concern. Only a handful of Part 450 launch licenses have been issued to date as the FAA begins a transition to the new regulations, but those licenses have taken longer to complete than expected, in some cases missing a 180-day statutory deadline. Industry officials raised the issue at a July 13 hearing of the House Science Committee and at a July 11 meeting of an FAA advisory group, the Commercial Space Transportation Advisory Committee. [emphasis mine]

The highlighted language says it all. It also suggests these new regulations, apparently written by the FAA and not Congress, might be contributing to the delays being experienced by SpaceX in its attempt to do test launches of its Starship/Superheavy rocket.

Varda is presently hoping to return the capsule in mid-August. It had begun this re-entry licensing process in early 2021 — more than two years ago — and still does not have that approval. Its business plan is to make money by manufacturing things in weightlessness that can’t be made on Earth — such as this HIV drug — and returning those items to Earth for sale.

Such a plan can’t work if the federal administrative state stands in the way.

6 comments

House rejects FCC bill because the bill approved FCC’s recent power grab

9:35 am

The full House yesterday failed to pass an FCC bill designed “to reform satellite spectrum licensing regulations” because of opposition to language that provided a backdoor approval of the FCC’s recent power grab that extended its regulatory power beyond its legal statutory authority.

[T]he leadership of House Science Committee opposed the bill because of provisions regarding regulation of space debris and space traffic management. They pointed to language in the bill that directed the FCC to establish “specific, measurable, and technology-neutral performance objectives for space safety and orbital debris.”

In a “Dear Colleague” letter circulated to House members ahead of the vote, the bipartisan leadership of the full committee and its space subcommittee argued that the FCC would be overstepping its authority by attempting to regulate space safety. “Congress has never explicitly granted FCC authority to regulate in these areas, and doing so now is a significant policy decision,” the letter stated, adding that the FCC also lacked expertise to do so. “Assigning FCC responsibility to both create these rules and assess an applicant’s compliance would divert resources from FCC’s primary mission of assessing the applicant’s spectrum use.”

While this sounds like Congress has actually decided to exercise its Constitution authority and restrict this maverick agency, don’t bet on it. The vote for procedural reasons required a two-thirds majority. 250 House members voted in favor, and 163 voted against, a clear majority in favor that was only 16 votes short of approval.

Moreover, even if Congress removes the language approving the FCC power grab and then passes the bill, it will have done nothing to stop that power grab. Expect FCC officials under Biden to ignore the law and continue to demand the right to regulate how satellites are de-orbited, something it hasn’t the knowledge or authority to do. Satellite companies will have to sue to stop it, an expensive task that will hinder their operations and cost money. Many will simply decide to go along.

The result will be a more powerful unelected administrative state — beholden to no law — and a weaker Congress unwilling to represent the American citizenry by wielding its Constitutional power.

Leave a comment

July 25, 2023 Quick space links

5:25 pm

Courtesy of BtB’s stringer Jay.

 

 

  • ULA CEO outlines planned schedule for first three Vulcan launches

    • He says, the first in the fourth quarter 2023, the second in the first half of 2024, and the third in second half of 2024. The first two flights are necessary before the military will certify Vulcan for its launches. Since the military is ULA’s biggest customer, it desperately needs those very delayed launches to fly as soon as possible.

 

 

 

4 comments

Swirling layers in the basement of Mars

11:28 am

Swirling layers in the basement of Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on March 31, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

In labeling this picture the science team focused on the many layers visible in these swirls, all suggesting a series of cyclical events, each laying down a new layer over many eons.

What caused the swirls? Looking at the lower right quadrant it appears that they were glacial, with the flow to the northwest but with each glacial layer smaller and not reaching as far.

This theory falls apart however at the curved depression, which instead suggests the swirl was traveling along a meandering canyon, going from the lower left to the upper right. If so, the curved depression is even more baffling. If ice it could have sublimated away, but its sharp edges suggest this isn’t ice but maybe a lava flow.
» Read more

Leave a comment

ESA: Ariane-6’s launch systems tests “progressing well”

9:30 am

According to a press release today from the European Space Agency (ESA), tests of the launch systems for its new Ariane-6 rocket are “progressing well”, though this particular test program was unable to finish its launch countdown rehearsal on July 18th with an actual static fire engine test of the rocket’s first stage engine.

The launch simulation included the removal of the mobile gantry, the chill-down of ground and launcher fluidic systems, the filling of the upper and core stage tanks with liquid hydrogen (–253°C) and liquid oxygen (–183°C), and at the end of the test, the successful completion of a launch chronology up to the ignition of the Vulcain 2.1 engine thrust chamber by the ground system.

During the 26-hour exercise, the teams successfully tested many degraded and contingency modes, demonstrating that the launcher and the launch base fit correctly. Operational procedures, lower and upper stages, avionics, software, launch base and control bench worked correctly together, and the performance of the full launch system was measured with excellent results.

The last part of the test – a short ignition of the Vulcain 2.1 engine – had to be postponed to the next test session as time ran out. The teams are now working towards continuing the exercise, in preparation for a long duration hot firing test later this summer. [emphasis mine]

The highlighted words imply a certain leisureliness on ESA’s part, an impression that might be wrong but it is the impression this language gives out. One wonders why the launch countdown could not have been completed to that static fire engine burst. “Time running out” seems a very lame reason, especially since ESA no longer has the Ariane-5 rocket and the Ariane-6 to replace it is years behind schedule.

2 comments

JPL employee admits he used COVID money fraudulently to grow pot

9:12 am

A JPL employee has pled guilty to lying on his applications for COVID loans in order to use the money “to pay off a real estate debt and fund his illegal cultivation of marijuana.”

Armen Hovanesian, 32, of Glendale, agreed to plead guilty to defrauding a government sponsored loan plan in 2020, admitting to using some of the fraudulently obtained cash to fund an illegal marijuana cultivation operation. Hovanesian works as a cost-control and budget-planning resource analyst for the JPL, which is a federally funded research lab for NASA, according to the United States Department of Justice.

From June 2020 to October 2020, Hovanesian submitted three loan applications to the Economic Injury Disaster Loan Program for businesses he operated. The program provided low-interest financing to small businesses, renters and homeowners affected by disasters, including the coronavirus pandemic. As part of his plea agreement, he admitted to making false and fraudulent statements when applying for the loans, including lying about each business’s revenue from the previous year, as well as making “false and fraudulent” statements regarding what he planned to do with the money if approved for the loans. [emphasis mine]

That this guy’s job at JPL was essentially a bean counter suggests this might help explain the center’s recent budget and management problems. It certainly indicates the quality of its management has declined.

8 comments

NASA awards 11 small development contracts to a variety of companies

9:01 am

Capitalism in space: NASA today announced that it has awarded small contracts to eleven different companies, ranging from big established companies like ULA and Lockheed Martin to small startups like Varda and Zeno, for developing a range of new technologies, from power production on the Moon to making building materials from lunar soil.

Five of the technologies will help humanity explore the Moon. For astronauts to spend extended periods of time on the lunar surface, they will need habitats, power, transportation, and other infrastructure. Two of the selected projects will use the Moon’s own surface material to create such infrastructure – a practice called in-situ resource utilization, or ISRU. Redwire will develop technologies that would allow use of lunar regolith to build infrastructure like roads, foundations for habitats, and landing pads.

Blue Origin’s technology could also make use of local resources by extracting elements from lunar regolith to produce solar cells and wire that could then be used to power work on the Moon.

Astrobotic’s selected proposal will advance technology to distribute power on the Moon’s surface, planned to be tested on a future lunar mission. The company’s CubeRover would unreel more than half a mile (one kilometer) of high-voltage power line that could be used to transfer power from a production system to a habitat or work area on the Moon.

The contracts range in price from $1.6 to $34.7 million, with Blue Origin getting that largest award.

Leave a comment

Rocket Lab delays its private mission to Venus two years to ’25

8:51 am

In order to focus at this time on its commercial customers, Rocket Lab has decided to reschedule its private mission to Venus, delaying its two years to the next launch window in 2025.

The mission appeared to still be on in May, before Rocket Lab quietly put it on the back-burner last month. Spokesperson Morgan Bailey said it had decided to delay the mission so it could concentrate on its commercial launches. “The decision was a business one and we look forward to delivering the Venus mission in 2025,” she said.

It also appears that the mission could be pushed back further if customer demand requires it.

2 comments

July 24, 2023 Quick space links

5:09 pm

Courtesy of BtB’s stringer Jay.

 

 

  • Details on recently awarded NASA unfunded agreements with seven companies

    • Jay notes, “Only two of the seven companies have anything physical: SpaceX and Northup-Grumman.” I must add however that Northrop Grumman’s proposal has to do with things it hasn’t built yet. SpaceX as usual has the most compelling idea: reconfiguring Starship as an orbital space station.

    Since NASA is providing no funds, I am not sure what the companies are getting from the agency in winning these contracts. Its engineers can provide some technical advice for sure, but in the end all they really can do is provide a second pair of eyes to review the work. Or to put it another way, someone whose only job will be to say “no.”

3 comments

No, that is not a sunspot on Mars!

11:33 am

No, that is not a sunspot on Mars!
Click for original image.

Cool image time! The picture to the right, cropped to post here, was taken on April 20, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). While at first glance this Martian terrain vaguely resembles the granular surface of the Sun, with the largest depression having its own faint resemblance to a sunspot, the resemblance exists only in our feverish imagination.

The depression might have been formed by an impact, though it is also possible it is a caldera, not of lava but of ice processes. The granular surface is likely resulting from the sublimation of ice, creating random holes and ridges as underground material changes from ice to gas and escapes at weak points on the surface.

My guess that we are looking at ice processes is based on the location, not far from where the first manned spacecraft will likely land.
» Read more

Leave a comment

Spirals within spirals

8:58 am

Spirals within spirals
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and annotated to post here, was taken by the Hubble Space Telescope as part of two different research projects that are studying galaxies where supernovae previously occurred. This particular galaxy is estimated to be about 192 million light years away, and is a classic example of a barred spiral.

Despite appearing as an island of tranquillity in this image, UGC 12295 played host to a catastrophically violent explosion — a supernova — that was first detected in 2015. This supernova prompted two different teams of astronomers to propose Hubble observations of UGC 12295 that would sift through the wreckage of this vast stellar explosion.

Supernovae are the explosive deaths of massive stars, and are responsible for forging many of the elements found here on Earth. The first team of astronomers used Hubble’s Wide Field Camera 3 (WFC3) to examine the detritus left behind by the supernova in order to better understand the evolution of matter in our Universe.

The second team of astronomers also used WFC3 to explore the aftermath of UGC 12295’s supernova, but their investigation focused on returning to the sites of some of the best-studied nearby supernovae. Hubble’s keen vision can reveal lingering traces of these energetic events, shedding light on the nature of the systems that host supernovae.

What struck me about this picture however were the many smaller spiral galaxies scattered nearby and behind UGC 12295, with one face-on spiral highlighted near the top. I can count at least three or four other background spiral galaxies, all reddish in color likely because their light has been shifted to the red due to their distance.

5 comments

SpaceX launches another 22 Starlink satellites

6:01 pm

SpaceX today successfully launched another 22 second generation Starlink satellites, using its Falcon 9 rocket lifting off from Cape Canaveral.

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

The leaders in the 2023 launch race:

49 SpaceX
29 China
9 Russia
6 Rocket Lab
5 India

American private enterprise now leads China in successful launches 56 to 29, and the entire world combined 56 to 48, with SpaceX by itself leading with the entire world combined (excluding other American companies) 49 to 48.

SpaceX’s 49 successful launches so far this year carries some additional historical significance. This number exceeds the launch count of the entire United States per year from 1968 to 2021, and SpaceX has done it in only a little more than half the year. Its reported goal of completing 100 launches this year remains very much within reach.

7 comments

China’s Long March 2D rocket places four satellites into orbit

9:52 am

China’s Long March 2D rocket today put four satellites into orbit, three to provide “remote sensing observation data and provide commercial remote sensing services,” and one “satellite communications technology verification.”

That’s everything China’s state run press tells us. The launch was also from China’s Taiyuan interior spaceport, which means the rocket’s lower stages crashed somewhere in China. No word on whether they attempted to control the landing, or if it crashed near habitable areas.

The leaders in the 2023 launch race:

48 SpaceX (with a launch planned later today. Live stream here.)
29 China
9 Russia
6 Rocket Lab
5 India

American private enterprise still leads China in successful launches 55 to 29, and the entire world combined 55 to 48, with SpaceX by itself tied with the entire world combined (excluding other American companies) 48 to 48.

The SpaceX launch later today was originally scheduled for yesterday, but got scrubbed due to weather.

Leave a comment

Indian company Skyroot conducts rocket engine test

11:24 am

Capitalism in space: The Indian rocket startup Skyroot successfully conducted a ten-second static fire test of a new engine, using a test facility of India’s space agency ISRO.

The Modi government has established a policy that ISRO must provide its facilities for private companies to develop their rockets, and this test was another demonstration that this policy is taking hold. It also indicates that Skyroot is getting closer to launching its first orbital rocket, Vikram-1.

One comment

China launches two smallsats

11:17 am

A Chinese pseudo-company dubbed Galactic Energy today placed two smallsats into orbit, using its solid-fueled Ceres-1 rocket that lifted off from China’s Jiuquan interior spaceport.

This pseudo-company might have gotten investment capital and operate like a private company, but its technology — solid rockets — is utterly derived from missiles, and thus it has done nothing without full control by China’s government. Like all of China’s pseudo-companies, it owns nothing that it sells.

Meanwhile, the rocket’s lower stages crashed somewhere in the interior of China. No word if they landed near habitable areas.

The leaders in the 2023 launch race:

48 SpaceX (with a launch planned later today. Live stream here.)
28 China
9 Russia
6 Rocket Lab
5 India

American private enterprise still leads China in successful launches 55 to 28, and the entire world combined 55 to 47, with SpaceX by itself leading the entire world combined (excluding other American companies) 48 to 47.

2 comments

July 21, 2023 Quick space links

3:37 pm

Courtesy of BtB’s stringer Jay, who is more awake than I on this Friday afternoon.

 

 

9 comments

The corporate fad to impose racial quotas appears to be fading fast

11:42 am

Coca-Cola's bigoted company policy
Examples of the bigoted educational material
being pushed by Coca-Cola

Here’s some good news to brighten your weekend: The corporate fad that became a steamroller after the death of George Floyd in 2020 to impose discriminatory racial quotas in hiring — all favoring minorities — now appears to be fading very quickly.

New analysis from employment data provider Live Data Technologies shows that chief diversity officers have been more vulnerable to layoffs than their human resources counterparts, experiencing 40% higher turnover. Their job searches are also taking longer.

…The number of [Chief Diversity Officer] searches is down 75% in the past year, says Jason Hanold, chief executive of Hanold Associates Executive Search, which works with Fortune 100 companies to recruit HR and DEI executives, among other roles.

The DEI movement not only demanded that companies hire more minorities, solely because of their race, it also tried to impose the anti-white hatred of critical race theory on all employees, as shown by the powerpoint presentations above that Coca-Cola foisted on its employees back in 2021. Since then the bad press as well as the crushing loss of customers who were offended deeply by these policies (think Bud Light, Gillette, and Target) has apparently hit home with corporate management.

The fight is not over however. Be warned that the leftists running this movement still have gigantic financial and political resources. One need only look to events in Congress yesterday, where Democrats at a hearing focused on the evils of censorship attempted to censor Robert Kennedy — who also happens to be a Democrat running against Joe Biden for president.

These thugs are still in power, and are getting increasingly brazen in how they abuse that power. If Americans let up their guard at this moment these thugs will move in fast to reimpose and even increase their power.

9 comments

Strings of Martian cones

10:10 am

Strings of Martian cones

Cool image time! The picture to the right, cropped and reduced to post here, was taken on May 25, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The scientists describe these cones as “longitudinally aligned cones,” but this is puzzling since the alignment runs from the northwest to the south east, not north-south along the longitude.

No matter. The alignment is in itself the mystery, especially because the full image shows many more strings of cones in this area, all running from the northwest to the southeast. The strings also are all curved in the same way, sagging to the southwest as if expressing a wave flowing in that direction.

What could create these strings of cones? The overview map below gives us a hint.
» Read more

Leave a comment

Chandrayaan-3 completes fourth engine burn in Earth orbit

9:04 am

Chandrayaan-3's mission profile

According to India’s space agency ISRO, engineers have successfully completed the fourth of about six engine burns designed to raise Chandrayaan-3’s Earth orbit in preparation for sending it on its path to the Moon.

As shown in the graphic to the right, these adjustments are relatively small, but each increases the speed of the spacecraft at its orbit’s closest point to the Earth. That extra velocity thus reduces the amount of fuel needed for that trans-lunar-injection burn.

If all the maneuvers continue to go as planned, the landing attempt will occur around August 23, 2023.

9 comments

South Korean researchers turn simulated lunar soil into building blocks

8:51 am

Using simulated lunar soil, South Korean researchers have developed the engineering that turns that soil into building blocks shaped as needed.

The researchers first produce simulated moon soil by grinding black volcanic rock from Cheorwon County bordering the North. They then use a microwave to turn the sand-like simulant into solidified blocks. Lee said the team has developed a technique to make blocks by heating the soil in a mold to more than 1,000 degrees Celsius in two to three hours and cooling them. In space, the process could be powered by nuclear energy.

The article at the link also provides a nice summary of the status of South Korea’s entire space effort.

2 comments

Viking cemetery found at new Saxavord spaceport in Scotland

8:43 am

Archeologists have discovered a Viking “ritual cremation cemetery” about 4,000 years old near the launch site at the new Saxavord spaceport in Scotland.

The burnt bones were found inside an arc of large granite boulders set into pits in the ground. A small platform of white quartz pebbles was also discovered which may have once been linked to a burial. Quartz is often associated with burial tombs in the prehistoric, and covered the entire outside wall of Newgrange in Ireland.

Test launches at Saxavord are expected to begin in the fall, with the first orbital launch next year. This schedule of course assumes launch licenses can be obtained from the UK’s Civil Aviation Authority.

9 comments

July 20, 2023 Quick space links

3:34 pm

Courtesy of BtB’s stringer Jay, helps make sure nothing gets missed.

 

 

 

 

7 comments

Real pushback: Stanford Law forces out administrator who aided and abetted a mob

12:31 pm

Tirien Steinbach: in favor of censorship and mob rule
Stanford’s former administrator Tirien Steinbach:
gone because she was in favor of censorship and
mob rule

Bring a gun to a knife fight: It appears that common sense and civilized behavior at Stanford Law School is finally being considered as the only proper behavior for the future and present lawyers that school is supposed to be training.

This story begins on March 9, 2023, when a mob of students and faculty at Stanford, led by Tirien Steinbach, the school’s diversity, equity and inclusion dean, shouted down U.S. Court of Appeals Judge Kyle Duncan when he tried to give a lecture about the law for the school’s chapter of the Federalist Society.

At the time the school’s response was weak and inconsistent. Though it sent a letter of apology to Duncan, it also equivocated about punishing anyone who had misbehaved. No students were expelled or suspended, and Steinbach was simply put on leave, even as university officials attempted to portray her as the victim. As I wrote then:

[Law School Dean] Martinez still appeared sympathetic to Steinbach, expressing “..concern over the hateful and threatening messages [Steinbach] has received as a result of viral online and media attention.”

Now, four months later Martinez has finally announced that Steinbach is resigning her post, though even now Martinez appeared regretful that this resignation was necessary.
» Read more

7 comments

Unknown Mars

11:36 am

MRO context camera mosaic
Click for interactive global mosaic.

Cool image time! The picture to the right was created from a global mosaic of all the context camera images taken by Mars Reconnaissance Orbiter (MRO) since it entered Mars orbit in 2006. It shows an unnamed 17-mile-wide-depression located only about seven miles south of the southern rim of Valles Marineris.

I highlight this particular depression because, despite seventeen years in orbit, MRO’s high resolution camera has at this time still not taken any pictures inside or around it. This is a place on Mars that remains unstudied in detail, in any way, even though its depth is comparable to the Grand Canyon and its features strongly suggest its is a collapse feature, created when the roof over an underground void gave way. If so, it suggests an origin for Valles Marineris that conflicts with present theories.
» Read more

Leave a comment

China’s Kuaizhou-1A rocket launches four satellites

10:57 am

China’s Kuaizhou-1A solid-fueled smallsat rocket today successfully launched what the state-run press said were four weather satellites “belonging to the Tianmu-1 meteorological constellation.”

The launch was from China’s Jiuquan spaceport in northwest China, so the rocket’s lower stages crashed somewhere inside China. No word on where or if they landed near habitable areas.

The leaders in the 2023 launch race:

48 SpaceX
27 China
9 Russia
6 Rocket Lab
5 India

American private enterprise still leads China in successful launches 55 to 27, and the entire world combined 55 to 46, with SpaceX by itself leading the entire world combined (excluding other American companies) 48 to 46.

Leave a comment

Hubble image shows several dozen boulders flung from Dimorphos

9:40 am

Boulders drifting from Dimorphos
Click for original image.

Using the Hubble Space Telescope, astronomers have photographed several dozen boulders that were flung off of the asteroid Dimorphos following the impact by the space probe DART. The picture to the right, reduced and brightened to more clearly show those boulders, was taken on December 19, 2022, four months after DART’s impact.

These are among the faintest objects Hubble has ever photographed inside the Solar System. The ejected boulders range in size from 1 meter to 6.7 meters across, based on Hubble photometry. They are drifting away from the asteroid at around a kilometre per hour.

The blue streak is the dust tail that has streamed off of Dimorphos since the impact, pushed away from the sun by the solar wind.

2 comments
1 … 157 158 159 160 161 … 951