Year: 2024

Was the Chicxulub bolide 65 million years ago an asteroid from beyond Jupiter?

9:21 am

According to a new study, the Chicxulub bolide that impacted the Yucatan 65 million years ago and is thought to have been a major cause of the extinction of the dinosaurs was likely a carbonaceous-type asteroid from beyond Jupiter.

The researchers attempted to pinpoint the nature of that bolide by analyzing the isotope samples from the thin layer of materials found worldwide that corresponds to the impact (dubbed the K-Pg boundary) as well number of different impact samples from different layers.

To address these questions, Mario Fischer-Gödde and colleagues evaluated ruthenium (Ru) isotopes in samples taken from the K-Pg boundary. For comparison, they also analyzed samples from five other asteroid impacts from the last 541 million years, samples from ancient Archaean-age (3.5 – 3.2 billion-years-old) impact-related spherule layers, and samples from two carbonaceous meteorites.

Ficher-Gödde et al. found that the Ru isotope signatures in samples from the K-Pg boundary were uniform and closely matched those of carbonaceous chondrites (CCs), not Earth or other meteorite types, suggesting that the Chicxulub impactor likely came from a C-type asteroid that formed in the outer Solar System. They also rule out a comet as the impactor. Ancient Archean samples also suggest impactors with a CC-like composition, indicating a similar outer Solar System origin and perhaps representing material that impacted during Earth’s final stages of accretion. In contrast, other impact sites from different periods showed Ru isotope compositions consistent with S-type (salicaceous) asteroids from the inner Solar System.

My headline poses this result as a question because these results are unconfirmed, and based on a very small sample of data. Nonetheless, this research not only gives us a better idea of the nature of the Chicxulub impactor, it does the same for a number of other important past impacts. That data in turn will help theorists refine their theories describing the early formation history of the solar system.

Sidebar: As always, there are numerous stories today in the mainstream press going ga-ga over this paper and declaring with certainty the utter truth of its conclusions. This of course is junk reporting, as there is no utter truth here, only some educated speculation based on some new data.

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China launches new set of classified remote-sensing satellites

9:06 am

China today launched a new set of classified remote-sensing satellites supposedly designed to test “new technologies of low-orbit constellations, using its Long March 4B rocket lifting off from its Xichang spaceport in the southwest of China.

Almost no information was released about the satellites. Nor did China’s state-run press reveal where the rocket’s lower stages, carrying toxic hypergolic fuels, crashed within China.

The leaders in the 2024 launch race:

81 SpaceX
34 China
10 Rocket Lab
9 Russia

American private enterprise still leads the rest of the world combined in successful launches 96 to 52, while SpaceX by itself still leads the entire world combined, including American companies, 81 to 67.

These numbers will likely change in only a few hours, as SpaceX has another launch today, scheduled for 11:20 am (Pacific).

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NASA reconsiders cancellation of overbudget and behind schedule robotic refueling mission

8:59 am

Due to some pressure from Congress (which wants the 450 jobs the project employs), NASA is now reconsidering its cancellation of the On-Orbit Servicing, Assembly and Manufacturing (OSAM) 1 mission, designed in the late 2000s to demonstrate the robotic refueling of a dead satellite but is so overbudget and behind schedule that in the interim private enterprise accomplished the same goal now repeatedly for a fraction of the cost.

Language in the final fiscal year 2024 appropriations bill, released just days after NASA’s cancelation announcement, which fully funded OSAM-1 at $227 million, directed NASA to adjust the mission to launch in 2026 within the spending profile NASA included in its 2024 budget request. That could be done, the report accompanying the bill suggested, through “potential de-scoping of some non-essential capabilities,” adding that if it is not possible, NASA should conduct another continuation review in September.

In other words, Congress wants NASA to keep this project, even if it means cutting the budget of other more useful and valuable missions.

OSAM has cost a billion dollars so far, and after almost fifteen years has not yet flown. Meanwhile, Northrop Grumman’s MEV servicing robot has already provided fuel to several dead satellites, while orbital tug startups are flying missions and developing the same refueling capabilities for far less. The industry doesn’t need this demonstration mission anymore. It has already demonstrated it, and done so better.

Moreover, why the heck does OSAM require 450 people? That number is absurd, and likely exceeds the payrolls of all the orbital tug companies plus Northrop’s robotic servicing division combined.

There is hope for the American taxpayer. The legislative recommendations above come solely from the Senate. The House appears less interested in spending this money. And NASA has not yet decided what it will do.

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India completes third and last test launch of its SSLV rocket

8:57 pm

India today successfully completed the third and last test launch of its Small Satellite Launch Vehicle (SSLV), lifting off from its Sriharikota spaceport and carrying an experimental satellite designed to test a number of new technologies.

This launch is three-plus years late. It was originally to take place no later than 2021, but India’s space agency ISRO shut down entirely during the COVID panic, putting a halt on the rocket’s development. This delay also badly damaged ISRO’s attempt to grab the smallsat launch market. While it hid in basements in fear of a virus comparable to the flu, companies on the U.S. pushed to grab that market. Whether it can now grab its own market share is unclear, but the increased regulatory burdens that have appeared in the U.S. in the last three years gives it an opportunity.

This was India’s third launch in 2024, so the leader board in the 2024 launch race remains unchanged:

81 SpaceX
33 China
10 Rocket Lab
9 Russia

American private enterprise still leads the rest of the world combined in successful launches 96 to 51, while SpaceX by itself still leads the entire world combined, including American companies, 81 to 66.

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Lockheed Martin to purchase satellite builder Terran Orbital

1:48 pm

Lockheed Martin today announced that it intends to purchase the satellite company Terran Orbital, of which it already owns one third of its stock.

Lockheed said Aug. 15 it would buy Terran Orbital for $0.25 per share in cash and retire the company’s existing debt. The deal, expected to close in the fourth quarter, has an enterprise value of $450 million. Shares in Terran Orbital closed Aug. 14 at $0.40.

Lockheed had six months ago offered to buy the company for $1 per share, but then withdrew the offer. It appears this new offer is intended to save the company, as Lockheed needs it. Right now 90% of Terran Orbital’s contracts are with Lockheed, and if the company goes under so do those deals.

This situation appears related to funding problems being experienced by the Rivada 300-satellite constellation. It had signed a $2.4 billion contract with Terran to build those satellites, but Terran removed that contract from its listed deals this week, suggesting that it no longer expected it to happen.

Lockheed Martin has made a strong effort in the past decade to remake itself to meet the challenges of the new space market, including entering the smallsat satellite manufacturing market. Thus it should be able to absorb Terran Orbital’s operations with little major harm to both, and much benefit.

Hat tip to BtB’s stringer Jay.

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A tour of Blue Origin’s New Glenn factory

1:33 pm

Tim Dodd of Everyday Astronaut on May 30, 2024 was given a detailed tour by founder/owner Jeff Bezos of Blue Origin’s New Glenn factory at Cape Canaveral.

It is incredible to watch, because for the very first time, Bezos shows us what the company is finally doing to prepare for the first New Glenn launch, targeting no earlier than the end of September. Unlike every other visual shown of this facility in the past, this tour actually shows a factory floor where work is going on.

Much of the backgrounds inside the stages have apparently been put out of focus to protect Blue Origin’s proprietary rights. No matter.

As for the state of the manufacture of the BE-4 engines, Bezos stated that he expects next year to be building one engine every three days. Cross your fingers that he is right.

I have embedded the video of the tour below. Enjoy, and get excited by the competition and capability this rocket will create when it finally starts flying.
» Read more

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The continuing stalemate in the Ukraine War

12:32 pm

In the past few months the situation in the war between Russia and the Ukraine has had some significant battlefield events that suggested the situation is becoming unstable. First, Russia began an offensive campaign along the northern border of the Ukraine near the Ukrainian city of Kharkiv, pushing back into the same territory it had abandoned during its major retreat and defeats in the fall of 2022.

This offensive, combined with the gains Russia has made in the past few months in eastern Ukraine, suggested that it had completely recovered from those 2022 defeats, and was now moving forward in its effort to conquer the Ukraine in its entirety. At least, that’s how it seemed from a cursory outsider’s view.

Then, last month, the Ukraine launched its own offensive across the border into Russia’s Kursk region, the first time any Russian territory had been invaded since Russia’s unprovoked invasion of the Ukraine in February 2022. That same cursory view suggested that the situation was becoming unstable, and that Russia now faced a serious problem of its own.

To me, the only way to find out how serious these changes are since my last Ukraine War update six months ago, in February 2024, is to do another, and to compare the territorial changes on a map, as I have done every time previously.

Not surprisingly, a look at the map brings clarity to the situation.
» Read more

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Astronomers discover a nearby star moving so fast it could even escape the Milky Way

10:20 am

Astronomers, both professional and amateur, have discovered a nearby star only 400 light years away that is moving so fast, 1.3 million miles per hour (almost three times faster than the Sun), it might very well escape the Milky Way and fly into intergalactic space in the far future.

The star, named CWISE J124909+362116.0 (or “J1249+36” for short), was first spotted by some of the over 80,000 citizen science volunteers participating in the Backyard Worlds: Planet 9 project, who comb through enormous reams of data collected over the past 14 years by NASA’s Wide-field Infrared Survey Explorer (WISE) mission. This project capitalizes on the keen ability of humans, who are evolutionarily programmed to look for patterns and spot anomalies in a way that is unmatched by computer technology. Volunteers tag moving objects in data files and when enough volunteers tag the same object, astronomers investigate.

J1249+36 immediately stood out because it was moving at about .1 percent the speed of light.

The star itself is either a very low mass red dwarf, or possibly a brown dwarf that never quite had enough mass to ignite as a star.

You can read the research paper here [pdf]. The researchers posit two possible explanations for the star’s speed. Either it was once part of a binary and thrown out when its white dwarf companion exploded as a supernova, or was once located in a densely packed globular cluster, where the interaction with other stars or even black holes could have flung it away.

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Rocket startup Stoke Space is saddled with the same red tape as SpaceX

10:06 am

Stoke's Nova rocket
Stoke’s Nova rocket

We’re from the government and we’re here to help you! The rocket startup Stoke Space appears to be struggling with the same kind of environmental red tape that is hindering SpaceX, though in Stoke’s case the red tape appears absurdly unnecessary.

Stoke is the only company besides SpaceX developing a rocket with both its first and second stages returning to Earth to land vertically and then be reused. Unlike SpaceX Starship/Superheavy, which is gigantic and revolutionary in all ways, Stoke’s Nova rocket is comparable in size to the hundreds of rockets that have launched from Florida since the 1960s. Based on that six-decade track record, it would seem that getting rights to launch Nova (but not for its return) would be considered basic and routine, requiring little complex bureaucracy.

Hah! Fooled you!

Before any of this can take place, the Space Force must complete its “environmental assessment” of the company’s plans at LC-14 [the launchpad used for John Glenn’s first orbital mission and many others subsequently], in order to evaluate how repeat launches will affect local flora and fauna. These assessments are mandatory under federal law, and they can often take months — but the upside is that they provide a closer look at a company’s operational plans.

» Read more

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ULA losing launch crews to other rocket companies

9:23 am

ULA, which hopes to set a company launch record next year, is right now suffering a major loss of its launch crews to SpaceX and Blue Origin.

This year alone, ULA has lost about 45 of its 105 Launch Operations engineers — the people who test, assemble and prepare every rocket and its cargo to fly — at its primary launch site in Florida, according to the person, who asked not to be identified discussing non-public information. The lack of experienced personnel has postponed work for future missions, the person said.

The article says the loss of these launch crew employees is because of higher pay offered by the other companies, but I suspect a contributing factor is ULA’s low rate of launches in recent years (3 in 2023 and 4 so far in 2024). These people have nothing to do, and see the lack of work as detrimental to their future careers. Better to move on, either to SpaceX where a lot of launches occur, one almost every other day, or to Blue Origin, where the rocket is new and the company has plenty of cash.

The flight of crews could also be because people do not see a future at ULA. For almost a year there have been rumors that Boeing and Lockheed Martin, which own it jointly, want to sell it. It was thought that sale would happen after the first Vulcan rocket launch, but it did not. In recent months those rumors have subsided, suggesting that the interest in buying the company has trailed off.

Despite these problems, ULA’s problems could very well be temporary. Its manifest has a lot of launches scheduled, and once Vulcan is certified for the military and operational for all its customers, it is expected to be launching more than twice a month next year. If those launches take place as planned, these issues will be begin to vanish very quickly.

In fact, it does appear that if you are an engineering student with an interest in rocketry, your future is extremely bright. There will be plenty of work opportunities for you in Florida in the future, from any one these companies.

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SpaceX launches two commercial Earth observation satellites

8:56 am

SpaceX this morning successfully launched two commercial high resolution Earth observation satellites for the company Maxar, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its sixteenth flight, landing back at Cape Canaveral. The two fairings completed their seventh and seventeenth flights.

The leaders in the 2024 launch race:

81 SpaceX
33 China
10 Rocket Lab
9 Russia

American private enterprise now leads the rest of the world combined in successful launches 96 to 50, while SpaceX by itself still leads the entire world combined, including American companies, 81 to 65.

These numbers will continue to go up, as India has a launch scheduled for later today, while SpaceX has another Transporter launch scheduled for tomorrow, carrying dozens of smallsats.

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