Live data from Hacker News

Satellite guided to assisted crash in Atlantic in world first

theguardian.com

11–20 of 48 posts

Re: Satellite guided to assisted crash in Atlantic in world first

#11
post #2

A British-built weather monitoring spacecraft has been deliberately guided into the Atlantic Ocean, the first time a defunct satellite has been maneuvered to perform an assisted crash on Earth. Aeolus, a satellite that has provided data to weather centers across Europe since 2018, was successfully helped to its final resting place by mission controllers at the European Space Agency.

Thanks ChatGPT for the summary!

Re: Satellite guided to assisted crash in Atlantic in world first

#12
post #4

Maybe it would be time to have a global agreement that all satellites must implement the means of "disposal re-entry" so they can be taken out of the space scrapyard and safely (as much as possible anyway) crashed to earth. The amount of debris in space is going to be a problem that's going to be both costly to solve and very detrimental to future space systems if we continue to not do enough about it.

Not likely. The re entry tech is a critical component of ICBMs. Satellites are relatively easy in comparison, they are just a orbiting computer with a sophisticated radio/signaling processing stack. Most countries can build satellites, but the countries that can put them into orbit are all significant powers. I doubt major powers would be willing to transfer smaller players the technology for controlling re-entry.

Lots of satellites have thrusters to stabilize and adjust their orbits. Especially those at lower orbits since they do have to counter the effects of atmospheric drag.

All that's really needed is a convention for those satellites than can, to use the last remaining propellant to perform a de-orbit maneuver.

Re: Satellite guided to assisted crash in Atlantic in world first

#13
post #11
post #2

A British-built weather monitoring spacecraft has been deliberately guided into the Atlantic Ocean, the first time a defunct satellite has been maneuvered to perform an assisted crash on Earth. Aeolus, a satellite that has provided data to weather centers across Europe since 2018, was successfully helped to its final resting place by mission controllers at the European Space Agency.

Thanks ChatGPT for the summary!

It's actually just first two paragraphs from the article, I don't know why this was posted.

Re: Satellite guided to assisted crash in Atlantic in world first

#14
post #4

Maybe it would be time to have a global agreement that all satellites must implement the means of "disposal re-entry" so they can be taken out of the space scrapyard and safely (as much as possible anyway) crashed to earth. The amount of debris in space is going to be a problem that's going to be both costly to solve and very detrimental to future space systems if we continue to not do enough about it.

Relevant: https://www.esa.int/Enabling_Support/Preparing_for_the_Futur...

Re: Satellite guided to assisted crash in Atlantic in world first

#15
post #11

Earlier quoted context omitted.

Thanks ChatGPT for the summary!

It's actually just first two paragraphs from the article, I don't know why this was posted.

When I posted the story there was a "text" field, thought it was to provide a summary of the article, but it actually creates a first post.

Re: Satellite guided to assisted crash in Atlantic in world first

#16
post #3

Did British and Germans and the rest of ESA members salvage it from the ocean or will it stay as trash in the ocean ? So much money so much power ... yet all we can to is burn it a little in the atmosphere and let the rest fall into the ocean. Ocean is full of life... lets not forget that. Anyway the solution could be a repairable satellite or removable by some device like space shuttle... ESA has the money, scientis…

The article seems to imply otherwise, but I suspect not much actually reached the surface. Re-entry is extreme and the majority of it would've vapourised in the atmosphere.

Re: Satellite guided to assisted crash in Atlantic in world first

#18
post #10

Do these satellites typically have such a seemingly short life?

That's what struck me most from this article too! 3 years?! That's a huge capital investment for very little service life.

I had naively expected at least something like 10 years, even in LEO.

Re: Satellite guided to assisted crash in Atlantic in world first

#19
post #10

Do these satellites typically have such a seemingly short life?

Sort of, Aeolus was a technology demonstrator and it had a intended lifetime of three years, which it surpassed. Other Earth Explorer missions have had similar lifetimes, but many have had much longer... I think since these are all very experimental things getting the up and working to prove the technology is the main thing, how long they make it past that is sort of random.
Post reply on HN