Boiling ‘baby bubble’ where stars are born comes into view

A remarkable brand-new picture of a cosmic gas bubble exposes never-before-seen information of this birth place of stars. 

The bubble surrounds the Westerlund 2 star cluster, among the brightest star-forming areas in the Milky Way. Westerlund 2 has to do with 20,000 light-years from Earth, and it hasn’t been observed in high resolution previously. The brand-new image reveals that the star cluster is surrounded by a single bubble of gas, not 2 as formerly assumed, which it’s most likely to keep birth stars well into the future. 

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