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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.

560 Kilometers Above Europa

Explanation: This is the closest photograph ever taken of Europa . Last December, NASA's spacecraft Galileo swept past the Jovian moon and took photographs which were released yesterday . Speculation that life-bearing oceans exist beneath Europa's surface caused NASA to put Galileo on orbits that approach Europa . The above photograph shows new details on Europa's surface , indicating that much of Europa as strewn with bumps and hills of ice laced with long fractures. Dark circular features may be impact craters .

Date March 3, 1998
Credit Credit: Galileo Project, JPL, NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.