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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.

A Fisheye View of Comet Hale-Bopp

Explanation: Thousands of stars, several constellations, a planet and a comet all graced the western horizon over Ujue, Spain just after sunset on April 4th, 1997. Because the picture was taken with a fisheye lens, much of the whole night sky is visible. Comet Hale-Bopp , with both tails blazing, appears right of center. The brightest star is Sirius near the edge, well to the left of the constellation Orion . The red star above the belt of Orion is Betelgeuse , while the red star near the center is Aldebaran , just to the left of the bright Pleaides star cluster. Many other interesting astronomical objects are visible, including zodiacal light , which is the diffuse triangular glow in the center. Even the planet Mercury appears just over the horizon.

Date August 25, 1997
Credit Credit & Copyright: J. C. Casado
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.