 IndyEddie
"Hello, Good evening," he greeted the students as they entered. Pausing a bit, he began class:
"When stars go pop, a murderous torrent of energy is released. Life on Earth may have been partly extinguished by just such a violent outburst. Stars are generally too far away to be a concern for life on our planet. But certain stellar eruptions have the potential to reach across tens or even thousands of light-years.
The most familiar of these is a supernova, which is the curtain call of a massive star with eight or more times the mass of our sun. When the nuclear fuel runs out for such a behemoth, the collapsing core generates an explosion that outshines an entire galaxy-worth of stars while it lasts.
"A couple supernovae go off in our galaxy every century. But for one of these to have serious consequences for Earth, we would need to be roughly within a 10 light-year radius of the blast. "
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We'll always be together cuz we're both under the moon |