Editing Talk:2878: Supernova
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Anyone know of a recent event that could have inspired this comic? Betelgeuse is mentioned in the explanation but has there been any newsworthy supernovae in the past week? [[User:Alcatraz ii|Alcatraz ii]] ([[User talk:Alcatraz ii|talk]]) 05:49, 9 January 2024 (UTC) | Anyone know of a recent event that could have inspired this comic? Betelgeuse is mentioned in the explanation but has there been any newsworthy supernovae in the past week? [[User:Alcatraz ii|Alcatraz ii]] ([[User talk:Alcatraz ii|talk]]) 05:49, 9 January 2024 (UTC) | ||
:[https://news.fnal.gov/2024/01/final-supernova-results-from-dark-energy-survey-offer-unique-insights-into-the-expansion-of-the-universe/ Maybe this?] [[Special:Contributions/172.70.210.40|172.70.210.40]] 12:31, 9 January 2024 (UTC) | :[https://news.fnal.gov/2024/01/final-supernova-results-from-dark-energy-survey-offer-unique-insights-into-the-expansion-of-the-universe/ Maybe this?] [[Special:Contributions/172.70.210.40|172.70.210.40]] 12:31, 9 January 2024 (UTC) | ||
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isn't the chart missing an uptick to the right? wouldn't the appearance of a supernova at, say, 13.6bn light years away make astronomers ''extremely'' happy? --[[Special:Contributions/172.70.91.211|172.70.91.211]] 15:40, 9 January 2024 (UTC) | isn't the chart missing an uptick to the right? wouldn't the appearance of a supernova at, say, 13.6bn light years away make astronomers ''extremely'' happy? --[[Special:Contributions/172.70.91.211|172.70.91.211]] 15:40, 9 January 2024 (UTC) | ||
The shape of the graph is very similar to [[815: Mu]] [[User:Firestar233|guess who]] ([[User talk:Firestar233|if you want to]] | [[Special:Contributions/Firestar233|what i have done]]) 17:49, 9 January 2024 (UTC) | The shape of the graph is very similar to [[815: Mu]] [[User:Firestar233|guess who]] ([[User talk:Firestar233|if you want to]] | [[Special:Contributions/Firestar233|what i have done]]) 17:49, 9 January 2024 (UTC) | ||
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− | No. It could not have already exploded. This indicates a lack of understanding of relativity. The more accurate statement would be that from our perspective, Betelgeuse hasn't exploded yet, and from the perspective of Betelgeuse, Earth is as it was 700 years ago (local to earth), and from the midway point between Earth and Betelgeuse, Earth is as it was 350 years ago (local to earth) and Betelgeuse is as it was 350 years ago (local to Betelgeuse). Simultaneity changes with the perspective of the observer | + | No. It could not have already exploded. This indicates a lack of understanding of relativity. The more accurate statement would be that from our perspective, Betelgeuse hasn't exploded yet, and from the perspective of Betelgeuse, Earth is as it was 700 years ago (local to earth), and from the midway point between Earth and Betelgeuse, Earth is as it was 350 years ago (local to earth) and Betelgeuse is as it was 350 years ago (local to Betelgeuse). Simultaneity changes with the perspective of the observer, such that what we call now locally is what is happening to Betelgeuse 700 years ago from our perspective, and what we call now locally is what is happening 700 years in the future from the perspective of Betelgeuse, but since causality travels at the speed of the light, Betelgeuse has certainly not exploded yet, despite the distances between earth and Betelgeuse. |
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