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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.

Annular Eclipse: The Ring of Fire

Explanation: Tomorrow, a few lucky people may see a “ring of fire.” That's a name for the central view of an annular eclipse of the Sun by the Moon . At the peak of this eclipse , the middle of the Sun will appear to be missing and the dark Moon will appear to be surrounded by the bright Sun. This will only be visible, however, from a path that crosses the southern Indian Ocean . From more populated locations, southern Africa and parts of Australia , most of the Moon will only appear to take a bite out the Sun . Remember to never look directly at the Sun even during an eclipse. An annular eclipse occurs instead of a total eclipse when the Moon is on the far part of its elliptical orbit around the Earth . The next annular eclipse of the Sun will take place in 2010 January, although a total solar eclipse will occur this July. Pictured above, a spectacular annular eclipse was photographed behind palm trees on 1992 January.

Date January 25, 2009
Credit Credit & Copyright: Dennis L. Mammana ( TWAN )
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.