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This image from NASA’s Chandra X-ray Observatory shows the location of different elements in the Cassiopeia A supernova remnant including silicon (red), sulfur (yellow), calcium (green) and iron (purple). Each of these elements produces X-rays within narrow energy ranges, allowing maps of their location to be created. The blast wave from the explosion is seen as the blue outer ring. Astronomers study supernova remnants to better understand how stars produce and then disseminate many of the elements on Earth and in the cosmos at large.

NASA’s Chandra Reveals Star’s Inner Conflict Before Explosion

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Artist's concept of an asteroid

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Juno Detected the Final Missing Auroral Signature from Jupiter’s Four Largest Moons

Juno Detected the Final Missing Auroral Signature from Jupiter’s Four Largest Moons

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Test

Lauren E. Low

Aug 27, 2025

Article

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