Ultra Deep Field

In the constellation Cassiopeia, 7,100 lightyears away, a start 45-times as heavy as our Sun is blowing out superhot winds of gas travelling at 6.4 million km/hr. These winds push against the much cooler blanket of interstellar gas, bunching them up along the surface of a giant bubble over seven lightyears across. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

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