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Old 11-03-2017, 09:34 AM   #41
Fred Brackin
Join Date: Aug 2007
Default Re: [IW] Imagining Lucifer-3

Originally Posted by AlexanderHowl View Post
Any rapidly rotating neutron star is a known x-ray source. Slow rotating neutron stars are almost impossible to detect if they are not consuming matter (

A plausible scenario .
I wouldn't say better than "perhaps physically possible".

You'd need an old neutron star whose void had filled in and we might still detect it from collisions with Oort Cloud objects smaller than planets. These would be far more probable than the very large object collision your scenario needs. They'd still be bright in the more energetic (and conspicuous) parts of the EM spectrum.
Fred Brackin
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Old 05-28-2020, 10:58 AM   #42
thrash's Avatar
Join Date: Aug 2004
Location: traveller
Default Re: [IW] Imagining Lucifer-3

Thread resurrect!

A recent paper in Science Advances, UV-B radiation was the Devonian-Carboniferous boundary terrestrial extinction kill mechanism, supports the idea that severe ozone-layer depletion is sufficient to cause an extinction-level event. It mentions several additional effects, such as organic runoff from dead plant matter on land leading to algal blooms, oxygen depletion, and toxic/ozone depleting gas production in coastal ocean waters.
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gamma ray bursts, infinite worlds, lucifer-3, supernova

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