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APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

Betelgeuse

Explanation: Here is the first direct picture of the surface of a star other than our Sun. Taken by the Hubble Space Telescope in 1995, the atmosphere of Betelgeuse reveals some unexpected features, including a large bright hotspot visible below the center. Betelgeuse (sounds like “beetle juice”) is a red supergiant star about 600 light years distant, easily recognizable from its brightness and reddish color in the constellation of Orion . While Betelgeuse is cooler than the Sun , it is more massive and over 1000 times larger. If placed at the center of our Solar System , it would extend past the orbit of Jupiter . Betelgeuse is nearing the end of its life and will become a supernova in a perhaps a few tens of millions of years.

Date April 19, 1998
Credit Credit: A. Dupree (CfA), R. Gilliland (STScI), FOC, HST, NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.