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Nov 15, 2023 at 12:12 vote accept Arcturus
Nov 15, 2023 at 9:42 history edited Arcturus
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Nov 14, 2023 at 10:21 history edited Arcturus CC BY-SA 4.0
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Nov 13, 2023 at 3:54 history edited Arcturus CC BY-SA 4.0
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Oct 31, 2023 at 7:44 history edited Arcturus
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Oct 9, 2023 at 5:55 comment added Pierre Paquette “Location, location, location…”
Oct 8, 2023 at 9:38 history edited Arcturus CC BY-SA 4.0
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Sep 15, 2023 at 19:58 comment added Darth Pseudonym A quasar isn't a different thing from an active galaxy. It's just which angle you're seeing it from (i.e. staring directly into a car's headlights versus looking at the car from the side as it drives past). What we initially called a quasar is when you happen to be looking directly into an active galaxy's polar jet.
Sep 14, 2023 at 11:26 history edited Arcturus
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Jun 2, 2023 at 18:47 comment added eshaya I can't find any peer reviewed article saying a quasar would destroy all life in its galaxy. I did find articles about quasars stopping star births in the inner few kpc. Since we are here, we can deduce that either the MW has not hosted a quasar in the last billion years, or quasars do not destroy all life in its galaxy. Most likely the term quasar is being used loosely as well.
Jun 1, 2023 at 16:47 history edited Arcturus CC BY-SA 4.0
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May 29, 2023 at 15:20 history edited Arcturus CC BY-SA 4.0
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Feb 11, 2023 at 16:18 history edited Arcturus CC BY-SA 4.0
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Jan 26, 2023 at 7:51 history edited Arcturus CC BY-SA 4.0
Adding other points
Jan 25, 2023 at 20:00 comment added James "...humans haven't mutated into horrendous creatures..." Citation needed.
Jan 23, 2023 at 7:05 answer added ProfRob timeline score: 9
Jan 23, 2023 at 7:01 answer added user47732 timeline score: 2
Jan 22, 2023 at 16:44 history edited Arcturus CC BY-SA 4.0
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S Nov 30, 2022 at 10:34 vote accept Arcturus
Jan 22, 2023 at 16:48
Nov 29, 2022 at 20:16 answer added zibadawa timmy timeline score: 7
Nov 29, 2022 at 15:03 history edited Arcturus CC BY-SA 4.0
editing the title of the question to correct grammar, and also add gamma ray reference to Fermi Bubble
S Oct 27, 2022 at 3:45 vote accept Arcturus
S Nov 30, 2022 at 10:34
Oct 19, 2022 at 15:34 history edited Arcturus CC BY-SA 4.0
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S Oct 16, 2022 at 15:49 vote accept Arcturus
S Oct 27, 2022 at 3:45
S Oct 16, 2022 at 15:49 vote accept Arcturus
S Oct 16, 2022 at 15:49
Oct 15, 2022 at 4:45 vote accept Arcturus
S Oct 16, 2022 at 15:49
Oct 10, 2022 at 22:37 comment added CJ Dennis Humans (any Homo species, not just Homo sapiens) started evolving about 3.3 - 2.8 million years ago. Obviously we had ancestors that were alive 6 million years ago, but we wouldn't describe them as human or even proto-human yet. en.wikipedia.org/wiki/Human_evolution
Oct 10, 2022 at 13:53 comment added Darrel Hoffman Given that we currently know of exactly one galaxy with life in it (and only on one planet in one star system at that), a claim that all life is necessarily destroyed some other galaxy is mere speculation.
Oct 9, 2022 at 10:43 answer added vvotan timeline score: 13
Oct 9, 2022 at 8:35 history edited Arcturus CC BY-SA 4.0
Replaced "million" with numericals, to avoid confusion with billion
S Oct 9, 2022 at 8:33 history suggested user985366 CC BY-SA 4.0
explain AGN
Oct 9, 2022 at 7:52 answer added RonJohn timeline score: 6
Oct 9, 2022 at 7:42 comment added RonJohn By definition, something cannot become it's own nucleus.
Oct 9, 2022 at 7:34 answer added fraxinus timeline score: 16
Oct 9, 2022 at 0:20 comment added eps " when galaxies become quasars, they destroy all life in their host galaxy" they don't, and whatever source you got that from is garbage.
Oct 8, 2022 at 23:28 review Suggested edits
S Oct 9, 2022 at 8:33
Oct 8, 2022 at 21:00 history tweeted twitter.com/StackAstronomy/status/1578852752855248897
Oct 8, 2022 at 19:07 comment added antlersoft Also, the central black hole in the Milky Way isn't very large as supermassive blackholes go, so even when active we aren't going to have the most brightest galactic nuculeus.
Oct 8, 2022 at 16:24 history became hot network question
Oct 8, 2022 at 14:38 history edited Arcturus CC BY-SA 4.0
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Oct 8, 2022 at 10:25 answer added James K timeline score: 48
Oct 8, 2022 at 9:38 comment added Daddy Kropotkin How close to the center of the galaxy must a solar system be for its planets to be turned "into barren wastelands" by emission from the Quasar?
Oct 8, 2022 at 8:00 history edited Arcturus CC BY-SA 4.0
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Oct 8, 2022 at 7:50 comment added ProfRob Hard to answer a straw man argument. Clearly the Milky Way "AGN" was not powerful enough to disrupt life on Earth. Your question would benefit from cited (reputable) sources that say Earth should have been turned "into a barren wasteland".
S Oct 8, 2022 at 7:41 review First questions
Oct 8, 2022 at 7:51
S Oct 8, 2022 at 7:41 history asked Arcturus CC BY-SA 4.0