Mysterious blue blobs a new type of star system created by a galactic ‘belly flop’

Scientists who were surveying a catalog of gas clouds spotted something strange: five “blue blobs” composed of young blue stars in the Virgo galaxy cluster. 

Unusually, these stars were completely isolated from their parent galaxies, and their stars were arranged in an irregular pattern. Based on those details, the researchers think they’ve discovered a new type of stellar system — a collection of gravitationally bound stars that’s not quite a galaxy but not a known type of star cluster, either.



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