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‘Once-in-a-lifetime’ explosion will bring a new star to the night sky
(edition.cnn.com)
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this post was submitted on 12 Jun 2024
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I mean, no. It hasn’t been years in the making, it happened a very, very long time ago. We just don’t get to see it until now.
It’s more that we’ve been anticipating the event for years.
This is saying good morning to everyone at midnight levels of pedantic. Astronomers need a common reference frame for discussing timing, and the reference frame they use is "when it's observed at Earth".
Because nothing else allows for coherent organization, discussion, or education.
A nuclear fusion event occurred in the accretion disk of a stellar remnant 2600 years ago or so. An astronomical event known as a nova will occur in the sky sometime this summer.