This artist concept shows that NASA Spitzer Space Telescope found evidence that this star, the remains of which are named Cassiopeia A, exploded with some degree of order, preserving chunks of its onion-like layers as it blasted apart.
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Details
Title: Once an Onion, Always an Onion Artist Concept
Creator: NASA/JPL-Caltech
Date Created: 2006-10-26
Rights: JPL
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