An Expanding Bubble in Space
A star 40 times more massive than our sun is blowing a giant bubble of material into space. In this colorful picture, the Hubble Telescope captured a glimpse of the expanding bubble, dubbed the Bubble Nebula (NGC 7635). The beefy star [lower center] is embedded in the bright blue bubble.
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https://www.nasa.gov/image-detail/an-expanding-bubble-space/
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