The Westerlund 1 star cluster: Hubble unveils detailed structure
Using the Hubble Space Telescope (HST), astronomers have observed a supermassive galactic open cluster designated Westerlund ...
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White Dwarf Star Exploded Several Hundred Years Ago
A study of supernova remnant SNR 0519-69.0 using the Chandra X-ray telescope, Hubble and more has narrowed down its age to several hundred of years. The remnant is located in the "Large Magellanic ...