Author: Robert Zimmerman

How private enterprise is solving the vulnerability of satellites to military attack

1:10 pm

Link here. The essay provides a nice overview of the U.S. military’s present conundrum on protecting all American satellites in orbit, not just military ones, and what it is beginning to do to solve it, now that the Space Force exists.

The approach is following three paths, with only the last two having any hope of success. First, the Biden administration is trying diplomacy to convince space-faring nations to ban future anti-satellite tests. This approach has really little chance of success.

The other two avenues involve innovations from private enterprise, launching many small satellites as part of a large constellation and in-orbit servicing, repair, and refueling. The first creates redundancy, making it difficult for any enemy power to easily destroy U.S. assets. The second provides capabilities for both fixing important satellites as well as attacking our enemy’s without causing space junk. Both will become common in the coming years, and thus will become very viable tools for military use.

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Today’s blacklisted American: Google, Paypal, Venmo team up to blacklist a gay organization

12:18 pm

Google loves blacklisting, along with its teammates Paypal,Venmo, and Twitter
Google loves blacklisting, along with its teammates
Paypal,Venmo, and Twitter

Blacklists are back and big tech likes ’em: Apparently because the homosexual advocacy group Gays Against Groomers opposes the exposure of queer ideology to little children, this week the big social media companies Google, Paypal, and Venmo did a coordinated crack down on the group, shuttering its accounts all within one day’s time.

Google, Paypal and Venmo shut down accounts affiliated with Gays Against Groomers, a Twitter account that is critical of gender ideology, particularly in regard to children. Venmo shut down the account early Tuesday morning, and Paypal blocked the account from its services minutes later, according to an email shared by the account’s founder Jamie Michell; Google shut down her account, including her email address, the following morning, according to a screenshot and an email.

Google reinstated the account the next day, but provided no credible explanation for its actions, at all.

In July this same organization had also been suspended by Twitter. The account was only reinstated when the group agreed to replace the letter “o” in “Groomers” with graphic eyeballs. It appears Twitter did not like the use of the word “groomers”, since it described precisely what queer advocates are doing when they espouse their perverse sexual behavior to young children.

The organization had been using its Twitter account to publicize examples where queer advocates performed sexually in front of kids. As it notes on its webpage:
» Read more

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Musk: Starship orbital attempt by November, at the latest

10:06 am

According to a tweet yesterday by Elon Musk, SpaceX engineers will likely have the first orbital prototypes of Starship and Superheavy ready for the orbital attempt either late in October, or by November. His full tweet:

Late next month maybe, but November seems highly likely. We will have two boosters & ships ready for orbital flight by then, with full stack production at roughly one every two months. [emphasis mine]

The highlighted words are the most significant. SpaceX is not building one rocket for test, like NASA has done with SLS. It is building an assembly line of test rockets, so that it can do a fast series of test launches plus upgrades, leading to quick and reliable operations. Should any one rocket launch fail, the company will speedily move on to the next, with little or no delay.

Should SLS fail in its first test launch sometime in the next month, NASA has no back-up. The entire program will be shattered, with no easy way to recover.

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Roscosmos head: Russia likely to remain ISS partner through 2028

9:57 am

According to a statement made by Yuri Borisov, the head of Roscosmos, during a press conference today, Russia now will definitely remain an ISS partner through 2024, and likely through 2028, assuming the station remains safe and operable.

These statements fit well with the “kinder, gentler” approach that Borisov seems to be taking in his relations with Russia’s international partners in space, compared to the bellicose and often hostile attitude of Roscosmos’s previous boss, Dmitry Rogozin. Borisov has been trying to ease the tension. He quickly signed the barter agreement with NASA allowing for crew exchanges on each other’s spacecraft, and has made it clear almost immediately that the ISS partnership was solid.

I strongly suspect Borisov will eventually offer OneWeb the return of its 36 satellites that Rogozin confiscated. This is not likely to regain Russia OneWeb’s commercial business, but it would do a lot to make it less a pariah in the international launch market.

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Nova Scotia spaceport signs deal with British rocket startup

9:46 am

Capitalism in space: Maritime Launch Services, the company that is building a spaceport in Nova Scotia, has signed an agreement with the British rocket startup Skyrora, naming its Skyrora-XL rocket as one of the launch providers for that spaceport.

As part of the agreement, Maritime Launch will purchase the vehicles and vehicle support staff from Skyrora for their satellite clients. Spaceport Nova Scotia will provide Skyrora a launch pad, ground and operations support, public safety services, regulatory approvals and mission integration facilities and staff. Skyrora will supply the launch vehicle, mobile launch complex, and launch operations support team to Maritime Launch.

Unlike other new spaceports, Maritime is running Spaceport Nova Scotia a bit differently. Most new spaceports simply provide a launch site for rocket companies. Maritime instead wants to offer satellite companies a full service spaceport, including the rocket. Initially the plan was to use a Ukrainian-built rocket, Cyclone-4M, as part of the service, but the Russian invasion of the Ukraine has made its availability uncertain.

This deal gives Maritime a new option to offer satellite companies. However, the Cyclone-4M was already somewhat tested, as it was an upgrade of the Ukrainian Tsiklon-4 rocket, which has already launched. Skyrora is only a startup, and has not yet flown.

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SLS fueling test completed

9:38 pm

NASA engineers today successfully completed the tanking test of the agency’s SLS rocket, completing all objectives after successfully dealing with a hydrogen fuel leak at the beginning of fueling.

The four main objectives for the demonstration included assessing the repair to address the hydrogen leak identified on the previous launch attempt, loading propellants into the rocket’s tanks using new procedures, conducting the kick-start bleed, and performing a pre-pressurization test. The new cryogenic loading procedures and ground automation were designed to transition temperature and pressures slowly during tanking to reduce the likelihood of leaks that could be caused by rapid changes in temperature or pressure. After encountering the leak early in the operation, teams further reduced loading pressures to troubleshoot the issue and proceed with the demonstration test. The pre-pressurization test enabled engineers to calibrate the settings used for conditioning the engines during the terminal count and validate timelines before launch day to reduce schedule risk during the countdown on launch day.

Teams will evaluate the data from the test, along with weather and other factors, before confirming readiness to proceed into the next launch opportunity. The rocket remains in a safe configuration as teams assess next steps. [emphasis mine]

The highlighted words are key. NASA has proposed a September 27, 2022 launch date. For that launch to occur, the rocket must remain on the launchpad, where it is impossible to check the batteries for operating the flight termination system used by the military range office to destroy the rocket should it go wildly out of control during launch. To check the batteries they need to roll it back to the assembly building, and one week is simply not enough time.

The vagueness of the highlighted language suggests that NASA has not yet gotten a waiver from the range for that date. Nor should it. Those batteries normally have a 20-day limit. On September 27th they will been unchecked for about 42 days, well past their use-by date.

This will be the first test launch of this rocket. Such first launches very frequently go wrong, and if SLS goes wrong, it would go wrong in a very big way, considering the size of the rocket. To do such a risky launch with a questionable flight termination system would not simply be improper it would be downright criminal.

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September 21, 2022 Quick space links

2:32 pm

Courtesy of BtB’s stringer Jay, who trolls Twitter so I don’t have to.

The powerpoint presentation can be viewed here [pdf]. Lots of interesting details, including the revelation that Rocket Lab is considering the construction of its own manned capsule.

To make sure there is no confusion, the satellite did not break apart. Instead, it appears to have been made of two spacecraft that have now undocked from each other and are testing automatic rendezvous and docking procedures, similar to the tests that Astroscale was doing.

The project is targeting 2030 for launch. The picture of the “hopper” at the link looks more like a Boston Dynamics robot dog.

Based on the deal with the UAE on the lunar Chang’e-7 mission, China is looking for other countries to sign on, and will likely get a few.

The deal doesn’t appear to include anything specific, only for both to explore future cooperation, including flying Canadian astronauts on Axiom’s station. Also, this deal suggests Canada will get the contract to build the robot arm for Axiom.

The company had previously done a 20 second test fire, and is still hoping to launch by the end of the year.

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Martian layers everywhere!

1:38 pm

Layers in Argyre Basin
Click for full image.

Cool image time! The photo to the left, rotated, cropped, and reduced to post here, was taken on June 1, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows the rim edge to a fifteen-mile-wide canyon, with many apparent layers exposed on the high plateau.

The layers are intriguing in that they suggest several things. First, they give us a glimpse into the top and youngest layers that make up the interior canyon wall. Second, they tell us that erosion has removed much of those top and youngest layers, resulting in the mesas on that plateau.

Finally, the gullies flowing down into the canyon indicate further erosion processes, eating away at the canyon wall over time.

The location of this canyon is also intriguing.
» Read more

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Pushback: NY cops fight city’s COVID jab mandate

12:16 pm

NY Mayor Eric Adams: an enthusiastic tyrant
NY Mayor Eric Adams: an enthusiastic tyrant

Bring a gun to a knife fight: In the past week three stories from New York City suggest that the willingness to fight against the irrational and abusive COVID shot mandates imposed by the one-party rule of the Democratic Party in that city can win.

First, a state judge in New York on September 13, 2022 ruled in favor of a lawsuit by police officer Alexander Delito, stating that the city cannot fire him for refusing to get the jab. Delito had apparently been arbitrarily denied a religious exemption, with no explanation. As the judge noted in his decision:

“The hollow and generic phrase ‘does not meet criteria’ cannot be rational because not a single item particular to [Deletto] was discussed and not a single reason for the decision was given,” Justice Arlene Bluth ruled. “There is no indication that anybody even read [Deletto’s] arguments. It is the duty of the agency to explain why it made the decision,” the judge added.

The ruling sets a precedent that will make it difficult for New York City to continue the mandate. Not surprisingly, a week later the city’s Democrat mayor, Eric Adams, announced he is lifting the mandate on the private sector and on school children, even as he refused to remove it from government workers.

The response from the leaders of various government unions was immediate. Here is just one example:
» Read more

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Another model attempts to show how liquid water could have once existed on Mars

11:07 am

The uncertainty of science: Scientists today published a new model that attempts to show how it was possible in the distant past for liquid water to have existed on the surface of Mars.

New research published in Earth and Planetary Science Letters suggests that Mars was born wet, with a dense atmosphere allowing warm-to-hot oceans for millions of years. To reach this conclusion, researchers developed the first model of the evolution of the Martian atmosphere that links the high temperatures associated with Mars’s formation in a molten state through to the formation of the first oceans and atmosphere. This model shows that — as on the modern Earth — water vapor in the Martian atmosphere was concentrated in the lower atmosphere and that the upper atmosphere of Mars was “dry” because the water vapor would condense out as clouds at lower levels in the atmosphere. Molecular hydrogen (H2), by contrast, did not condense and was transported to the upper atmosphere of Mars, where it was lost to space. This conclusion – that water vapor condensed and was retained on early Mars whereas molecular hydrogen did not condense and escaped – allows the model to be linked directly to measurements made by spacecraft, specifically, the Mars Science Laboratory rover Curiosity.

As a model, this theory proves nothing, though it is very intriguing. The scientists propose that the heat from the planet’s interior replaces the known lack of energy that came from the Sun in Mars’ far past. While this could work, what makes it very uncertain is that its surface data is based on a single measurement from Curiosity, hardly a deep and convincing baseline.

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Ingenuity completes 32nd flight

10:21 am

According to a tweet from JPL, Ingenuity successfully completed its 32nd flight on Mars on September 18, 2022.

The 55.3-second flight covered 93.74m at a max speed of 4.75 meters per second.

That is about 308 feet distance, comparable to the helicopter’s previous flight. Though it probably continued to the west, as with that last flight, JPL’s tweet did not provide any directional information.

This second short hop in a row however suggests that the team’s focus has definitely shifted from scouting for Perseverance to practicing precision landings, thus gathering data to help build the future Martian helicopter that will be used to pick up Perseverance’s core samples some time in the future.

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