Cassiopeia A: The Surprise Inside an Exploding Star - ABC News

ABC News
Cassiopeia A: The Surprise Inside an Exploding Star
ABC News
Supernovas, the violent explosions of massive stars after they have exhausted their nuclear fuel, have long been one of the most fascinating mysteries of the universe. Now, a new 3-D map of one of the most well-known supernovas, Cassiopeia A, reveals a ...
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