Posted: April 14, 2016 in Uncategorized
Tags: ,

just–space:

Hubbles Blue Bubble : The distinctive blue bubble appearing to encircle WR 31a is a WolfRayet nebula an interstellar cloud of dust, hydrogen, helium and other gases. Created when speedy stellar winds interact with the outer layers of hydrogen ejected by WolfRayet stars, these nebulae are frequently ring-shaped or spherical.

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