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threelonmusketeers, do astronomy w We planned for the unexpected, say stranded Nasa astronauts from space station

stranded Nasa astronauts

They are not currently stranded, and were never considered stranded, except maybe for the few days between Starliner’s empty return and the Crew-9 Dragon’s arrival.

This also isn’t really relevant to astronomy.

threelonmusketeers, do esa w SpaceForest Completes Full-Duration Test of Hybrid Rocket Engine

Fuel and oxidizer are different phases: en.wikipedia.org/wiki/Hybrid-propellant_rocket

In the case of the SF-1000, it sounds like the fuel is a solid wax and the oxidizer is liquid nitrous oxide.

spaceforest.pl/rocket-technologies/

threelonmusketeers, do esa w Solar Orbiter ready for close encounter with Venus

Today’s flyby will be the first to significantly ‘tilt’ the spacecraft’s orbit and allow it to see the Sun’s polar regions, which cannot be seen from Earth.

Huh, it never occurred to me that we haven’t seen what the Sun looks like from above or below the plane of the solar system.

threelonmusketeers, do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

Yeah, even for Lemmy this is bad. I hope most of them are semi-facetious?

threelonmusketeers, do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

Provided it enters in a similarly uninhabited location.

threelonmusketeers, do esa w ESA to Launch In-Orbit Refuelling Demonstration Mission

I wish they mentioned what propellant they’ll be testing. I’m assuming some hypergols or some gas for ion thrusters.

threelonmusketeers, do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

Technically the solar system is a multi-body system, and everything nudges everything else, but the mass of the earth is far greater than the mass of the asteroid, to the point that it doesn’t matter.

threelonmusketeers, do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032
threelonmusketeers, do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

Listed in the article:

Scientists estimate that 2024 YR4 is between 130 to 300 feet (40 and 90 meters) wide

threelonmusketeers, do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

Wouldn’t detonating on the forward side rather than the zenith side be most effective at lowering the perigee of the moon?

threelonmusketeers, (edited ) do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

Florida

You jest, but the Kennedy Space Center is in Florida. Putting the world’s busiest spaceport out of commission might put a damper on future asteroid deflection missions…

threelonmusketeers, do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

Just in case this comment is not a joke, here’s the WHO page on suicide prevention.

Either way, there are a few billion other people on this planet who would rather not die by meteor, thank you very much.

threelonmusketeers, do esa w [Eric Berger] Europe has the worst imaginable idea to counter SpaceX’s launch dominance

There’s only so much you can do when your ranges are literally on the other side of the planet.

Is suppose French Guiana is a bit far, but Andøya, Esrange, and Saxavord all have plans for orbital launches, don’t they?

threelonmusketeers, do esa w [Eric Berger] Europe has the worst imaginable idea to counter SpaceX’s launch dominance

Why not invest in a bunch of the smaller companies like Rocket Factory Ausburg, PLD Space, MaiaSpace, HyImpulse, etc? They won’t all be successful, but if just a couple of them are, the competition would put Europe in a much stronger position than if they were to establish Euro-ULA.

threelonmusketeers, (edited ) do esa w European Launch Startups Send Open Letter to ESA Outlining Key Priorities

It’s wasteful, immediately hazardous to any crews, and eventually (if not also immediately) harmful to the environment with any wreckage and other pollution that may be produced.

Interesting, I interpret “Europe must embrace a cultural shift towards speed and innovation” in almost exactly the opposite way.

Ariane 6 was essentially an outdated design before it even launched. All of the major American and Chinese launch companies are operating or developing reusable rockets. The launch startups which wrote the open letter are some of the only European organizations actively pursuing reusability, something Arianespace has ignored for far too long.

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