That’s the Great Filter. Basically, no intelligent life can survive past a certain point because they end up offing themselves. Pretty much what we’re about to do ourselves.
There are other explanations, ofc. Maybe there’s a galactic moratorium on contacting new space faring civilisations.
If you’re willing to discard the conclusion that we’re an early civilisation, then it’s reasonable to think that old civilisations have had plenty of time to decide whether or not to contact us.
There are quite a few different takeaways you could draw from that. My personal favourite is that they want to recreate the “early universe” experience for us because it’s an important process for civilisations to go through.
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.
Each of the several choices available in run 3 for selecting records at random from a database table comes with its own set of advantages and disadvantages. Depending on the specific requirements of the application, one of the methods can be more appropriate than the others.
Elon is probably mad it launched on an Ariane 5 and it went so perfectly, we’ll get an extra decade of science out of it.
The Ariane 5 really was a reliable rocket. It had some failures early on, like basically all rockets, but then it had 82 successful launches in a row and then one partial failure before having another long perfect streak.
Obviously, more expensive than modern reusable rockets but JWST was important enough of a payload, that I’m glad NASA/ESA chose Ariane. (Plus, given JWST’s delays, I imagine when that decision was made, SpaceX was still iterating and having occasional explosions.)
astronomy
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