GreenMonster
Adding Dimension to Cassiopeia A
Adding Dimension to Cassiopeia A Astronomers have discovered a mysterious feature within the Cassiopeia A supernova remnant using NASA’s James Webb Space Telescope, nicknamed the “Green Monster.” The Green Monster is part of a puzzling network of ejecta filaments forming a web of oxygen-rich material. When combined with X-rays from NASA’s Chandra X-ray Observatory, the […]
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