WEST LAFAYETTE, Ind. — New images from the James Webb Space Telescope that show intricate details of a supernova remnant called Cassiopeia A, a shimmering interstellar structure already under analysis ...
This cartoon courtesy of Anthony Piro illustrates three possibilities for the origin of the mysterious hydrogen emissions from the Type IA supernova called ASASSN-18tb that were observed by the ...
Four hundred years ago this week, a previously unseen star suddenly appeared in the night sky. Discovered on Oct. 9, 1604, it was brighter than all other stars. The German astronomer Johannes Kepler ...
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