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mr_toad
on July 3, 2025
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Astronomers discover 3I/ATLAS – Third interstellar...
Actually we’re in a surprisingly sparse area of the galaxy, a giant hole in the galaxy created by one (or more) supernova.
https://en.wikipedia.org/wiki/Local_Bubble
stevedonovan
on July 3, 2025
[–]
So much for the old thermonuclear ramjet idea....
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https://en.wikipedia.org/wiki/Local_Bubble