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Practice Reading: Fill in the Blanks (Dropdown)
ID: #48197
Observatory
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Astronomers have used data from two NASA telescopes, the Chandra X-ray Observatory and the James Webb Space Telescope, to new details about a bizarre structure in the debris field of an exploded star. The structure, the “Green Monster” because of its resemblance to the wall in the left field of Fenway Park, was first identified in Webb’s infrared data from April 2022. The origin of this feature was not clear, until the researchers combined the Webb data with X-rays from Chandra. The team that the Green Monster is part of the blast wave from the supernova explosion, and is plowing into the gas that was ejected by the star before it exploded. The material in the Green Monster is moving us, and has a much higher density than the average density of the surrounding gas. This result can help reconstruct the complicated history of mass loss by the star before it exploded.
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