Komentarze

threelonmusketeers, 2 miesiące temu 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, 2 miesiące temu 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, 2 miesiące temu 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, 2 miesiące temu do astronomy w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

!anythingbutmetric

threelonmusketeers, 2 miesiące temu 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, 2 miesiące temu 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, 2 miesiące temu (edited 2 miesiące temu) 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, 2 miesiące temu 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, 2 miesiące temu 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, 2 miesiące temu 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, 2 miesiące temu (edited 2 miesiące temu) 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.

threelonmusketeers, 2 miesiące temu do esa w ESA Set to Sign Major Argonaut Lunar Lander Contract in Q1

Argonaut will be a multi-role lunar lander capable of delivering up to 1,800 kilograms of cargo to the surface of the Moon.

According to a Phase A/B1 development document published in July 2024, ESA is targeting 2031 for the launch of the first Argonaut mission. The lander is set to launch aboard an ArianeGroup Ariane 64 rocket from the Guiana Space Centre.

Cool! Another lunar lander!

threelonmusketeers, 2 miesiące temu do esa w Last starlight for ground-breaking Gaia

I love that we launched a spacecraft with the sole purpose of measuring the positions of as many stars as possible, just because we could. Well done Gaia, and all the teams who worked on it.

threelonmusketeers, 2 miesiące temu do esa w Timelapse of BepiColombo's sixth Mercury flyby

Mendelssohn’s Hebrides was a beautiful music choice.

The thumbnail says “last flyby”. Is this “last” as in “most recent” or as in “final”?

threelonmusketeers, 3 miesiące temu do esa w ArianeGroup and Arianespace announce the departure of Stephane Israël, CEO of Arianespace, and the appointment of his successor David Cavaillolès

Ah, I didn’t realize you were referring exclusively to crewed missions. Yes, you are correct, the first crewed Falcon 9 launch was in 2020. The flew plenty of uncrewed commercial missions prior to that, though.

It seems like crewed European launch vehicles have a similarly slow timeline to reusable European launch vehicles.