For the 26th birthday of NASA's Hubble Space Telescope,astronomers are highlighting a Hubble image of an immense bubble being blown into space by a super-hot, massive star. The Hubble image of the Bubble Nebula, and NGC 7635,was chosen to mark the 26th anniversary of the launch of Hubble into soil orbit by the STS-31 space shuttle crew on April 24, 1990
Source: phys.org