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Topic: Gamma Ray Bursts

Artist’s interpretation of the calcium-rich supernova 2019ehk. Shown in orange is the calcium-rich material created in the explosion. Purple coloring represents gas shedded by the star right before the explosion, which then produced bright X-ray emission when the material collided with the supernova shockwave. (Aaron M. Geller, Northwestern University)

Gamma ray pulse sweeps Earth

Matthew Rozsa