Category: Points of Information

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

Evidence of giant asteroid collision in debris disk surrounding the star Beta Pictoris

9:48 am

Data difference between Spitzer and Webb
Click for original figure.

Scientists comparing infrared data collected twenty years apart — first by the Spitzer Space Telescope and then by the Webb Space Telescope — think they have detected evidence of a gigantic asteroid collision in the debris disk that surrounds the very young star Beta Pictoris, located 63 light years away.

The graph to the right shows the change found between the observations. From the caption:

Scientists theorize that the massive amount of dust seen in the 2004–05 image from the Spitzer Space Telescope indicates a collision of asteroids that had largely cleared by the time the James Webb Space Telescope captured its images in 2023.

…When Spitzer collected the earlier data, scientists assumed something like small bodies grinding down would stir and replenish the dust steadily over time. But Webb’s new observations show the dust disappeared and was not replaced. The amount of dust kicked up is about 100,000 times the size of the asteroid that killed the dinosaurs, Chen said.

It is believed by scientists that the debris disk that surrounds Beta Pictoris is comparable to the early solar system when the planets first started to form. This collision could be similar to the kind of collision that is thought to have formed the Moon, when a large Mars-sized object smashed into the early Earth.

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Scientists: Water frost detected in calderas of four Martian volcanos

9:33 am

Frost found on four Martian volcanoes

Scientists using data from two European Mars orbiters think they have detected patches of transient water frost in the calderas of four Martian volcanos, all located in the dry equatorial regions of Mars where previously no near-surface ice has been seen.

According to the study, the frost is present for only a few hours after sunrise before it evaporates in sunlight. The frost is also incredibly thin — likely only one-hundredth of a millimeter thick or about the width of a human hair. Still, it’s quite vast. The researchers calculate the frost constitutes at least 150,000 tons of water that swaps between the surface and atmosphere each day during the cold seasons. That’s the equivalent of roughly 60 Olympic-size swimming pools.

You can read the research paper here. The volcanoes with frost were Olympus Mons, Arsia Mons, Ascraeus Mons, and Ceraunius Tholus, as shown by the blue dots on the overview map to the right. All are in the dry tropics of Mars.

The researchers believe the frost comes from the atmosphere, like dew forming in the morning on Earth. For it to take place at these high elevations on Mars however is astonishing. At these high elevations the atmosphere is extremely thin. Furthermore, the dry tropics have so far been found to contain no near-surface water or ice to fuel these processes.

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Starliner’s stay at ISS extended several days

9:10 am

NASA revealed yesterday that it has extended the time that Boeing’s Starliner capsule will remained docked at ISS several days, with undocking now set for June 18, 2024.

New station visitors Butch Wilmore and Suni Williams, both veteran NASA astronauts, learned on Sunday they will orbit Earth until June 18 before returning home aboard Boeing’s Starliner spacecraft. The extra days in space will allow teams more time to checkout Starliner’s systems and free up the Expedition crew’s schedule for more spacewalk preparations.

I also suspect that Boeing engineers wanted more time to analyze the data on Starliner’s attitude thrusters and why several failed to work on the flight up to the station. Once the spacecraft undocks with Wilmore and Williams, it will be esssential for those thrusters to work reliably to get both home safely. The capsule can return home even with some of the spacecraft’s 28 attitude thrusters non-functioning, but if a failure occurs at an unexpected moment the results could still be bad.

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French startup gets another space station cargo contract

9:02 am

The French startup The Exploration Company has gotten its fourth contract for its proposed Nyx unmanned reusable cargo capsule, signing a deal with Vast to fly one freighter mission to its proposed second Haven station.

This startup, which has not yet flown anything, already had contracts to fly one cargo mission to ISS (a demo mission for the European Space Agency), one to Axiom’s space station, and three to Voyager Space’s Starlab station. This new contract means The Exploration Company already has a manifest of six missions.

These contracts pose a puzzle. Why is this startup getting all these deals, but not Northrop Grumman’s Cygnus or SpaceX’s Dragon capsules? Or have these two American companies signed deals without the same PR splash?

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June 10, 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.

 

 

 

 

  • ESA will pay Arianespace 340 million euros per year to operate Ariane-6

    • ESA will also give Arianespace 21 million euros to operate the Vega family of rockets. Why ESA is giving Arianespace anything is beyond sensible, since ArianeGroup supposedly builds and owns Ariane-6 and Avio supposedly now builds and owns the Vega rocket family. France meanwhile has retaken ownership of the French Guiana spaceport. Arianespace really has nothing left for it to do.

 

 

 

 

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After only seven commercial flights, Virgin Galactic retires Unity

9:33 am

The delays have never really ended: After only seven commercial flights (the most recent this past weekend), Virgin Galactic has now retired its Unity suborbital spacecraft, and will cease flights for two years while it builds a new generation suborbital craft.

Virgin Galactic flew the last commercial flight of Virgin SpaceShip (VSS) Unity yesterday. Future suborbital trips will have to wait until the new Delta-class spaceships are ready in 2026. They can carry six passengers instead of four, increasing revenue. This flight, Galactic 07, took a Turkish researcher and three private individuals across the imaginary line that separates air and space for a few minutes of weightlessness.

Founded in 2004 and largely funded by Sir Richard Branson as part of his Virgin Group, Virgin Galactic is still trying to demonstrate that commercial suborbital human spaceflight can be a profitable business. Last year Branson told the Financial Times he would stop investing in Virgin Galactic, putting pressure on CEO Michael Colglazier to cut costs and focus on getting the Delta version flying. After all these years of waiting to fly commercial passengers,VSS Unity will stop after just one year and seven commercial flights.

Branson had promised that Virgin Galactic would be flying hundreds of times per year by the mid-2000s. Didn’t happen. Virgin Galactic took deposits from hundreds (it claimed), but even now has only flown 30 people on those seven flights, many of whom have been recent customers, not the many original supporters. That’s the sum total of all of Richard Branson’s achievement with this company in two decades.

Now, with Branson out of the picture, the new management has to redo everything again, because what Branson designed was not profitable. I have serious doubts the company will fly again in 2026.

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SpaceX completes two Starlink launches hours apart

9:49 am

SpaceX last night completed two Starlink launches hours apart from opposite coasts. First its Falcon 9 rocket took 23 Starlink satellites into orbit, lifting off from Cape Canaveral. The first stage completed its 16th flight, landing on a drone ship in the Atlantic.

Then, a Falcon 9 rocket lifted off from Vandenberg carried 20 Starlink satellites into orbit, its first stage completing its 21st flight (tying the record), landing safely on a drone ship in the Pacific.

The leaders in the 2024 launch race:

62 SpaceX
27 China
8 Russia
7 Rocket Lab

American private enterprise now leads the world combined in successful launches, 72 to 41, while SpaceX by itself leads the entire world, including other American companies, 62 to 51.

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Apollo 8 astronaut Bill Anders, 90, killed in plane crash

8:59 pm

Earthrise as seen from Apollo 8, December 1968

Apollo 8 astronaut Bill Anders, 90, who took the iconic Earthrise picture (to the right and oriented as he framed it when he snapped it), was killed today when the plane he was piloting went down in the waters near the San Juan Islands off the coast of the state of Washington.

A report came in around 11:40 a.m. that an older-model plane crashed into the water and sank near the north end of Jones Island, San Juan County Sheriff Eric Peter said. Greg Anders confirmed to KING-TV that his father’s body was recovered Friday afternoon.

Only the pilot was on board the Beech A45 airplane at the time, according to the Federal Aviation Association.

I will have more to write about Anders later, whom I had met and interviewed many times when I was writing Genesis: the Story of Apollo 8. Of all the astronauts, he was probably the most thoughtful about matters outside of engineering, space exploration, or aviation.

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June 7, 2024 Quick space links

4:58 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.

 

 

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Today’s blacklisted American: Biden’s Justice Dept prosecutes doctor who blew the whistle on child mutilation at hospital

1:26 pm

Ethan Haim
Ethan Haim

They’re coming for you next: This story provides possibly the best illustratration of the barbarism of the Democratic Party and the Biden administration. Rather than celebrate the courage of Ethan Haim, the doctor who in 2023 blew the whistle on the continuing secret sex change operations being performed on children as young as 11 at Texas Children’s Hospital, the Biden Justice Department this week indicted that doctor on four felony charges.

On the morning in June 2023 that Haim was to graduate from Texas Children Hospital’s residency program, federal agents knocked on his door. They had identified him as a potential “leaker,” presumably through forensic examination of the hospital’s computer systems. Shortly thereafter, Assistant U.S. Attorney Tina Ansari began threatening Haim with prosecution.

Now, Ansari has made good on those threats. Earlier this week, U.S. marshals appeared at Haim’s home and summoned him to court to face an indictment on four felony counts of violating HIPAA. His initial appearance is next Monday [June 10th], where he will learn more about the charges against him.

Haim should be proud. He has now joined Donald Trump as one of the many innocent Americans being persecuted by the weaponized lawfare of the Democrats and the Biden administration because they simply disagree with its policies.

The facts of the case prove the political nature of the charges.. First, Christopher Rufo, who broke Haim story at the City Journal, makes it very clear that Haim was very careful to violate no HIPPAA rules.
» Read more

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