The Bubble Nebula (also designated NGC 7635) is a faint emission nebula in the constellation Cassiopeia the Queen near its border with Cepheus. It rides high in the sky at this time of year. You can ...
William Herschel first observed NGC 7635 in 1787 as a glow around the magnitude 8.7 star SAO 20575 (cataloged earlier as BD+60°2522). In a telescope, the Bubble Nebula looks more like a comma because ...
For the 26th birthday of NASA’s Hubble Space Telescope, astronomers are highlighting a Hubble image of an enormous bubble being blown into space by a super-hot, massive star. The Hubble image of the ...
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