EVANSTON, Ill. — Astronomers have observed what they are calling a new type of supernova, which has provided an unparalleled glimpse into what happens deep within a star just before it explodes. A ...
Supernovas are bad news. They can wreck biospheres and flood planets with deadly radiation. And now, a recent study has added a new potential threat: a special type of supernova that can destroy a ...
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