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News Release Archive:

News Release 864 of 949

September 30, 1993 12:00 AM (EDT)

News Release Number: STScI-1993-21

Hubble Sees Gas Shell Around Nova Cygni 1992

September 30, 1993: NASA's Hubble Space Telescope (HST) has given astronomers their earliest look at a rapidly ballooning bubble of gas blasted off a star. The shell surrounds Nova Cygni 1992, which erupted February 19, 1992. A nova is a thermonuclear explosion that occurs on the surface of a white dwarf star in a double star system. Nova Cygni 1992 was one of the brightest novae in 20 years, reaching naked-eye visibility for a brief period.

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Credit: Francesco Parasce, ESA/STScI and NASA