NASA telescope uncovers new mystery in supernova first spotted by Chinese astronomers 2,000 years ago —‬ Space photo of the week

NASA's Imaging X-ray Polarimetry Explorer reveals the expansion and shock patterns within RCW 86, a supernova observed by ...
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Buried in a faint dwarf galaxy, a star with almost no iron is rewriting the story of how the universe’s first stars died

In a tiny, faint dwarf galaxy 150,000 light-years away, astronomers have found a star containing just 1/40,000th of the iron ...
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Astronomers tried to reconstruct a galaxy from 12 billion years ago until they realized it had grown by slowly devouring smaller galaxies

A team of astronomers have successfully reconstructed a 12-billion-year-old galaxy to discover how the ancient galaxy grew to ...