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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.

Daytime Moon Meets Morning Star

Explanation: Venus now appears as Earth's brilliant morning star, standing in a line-up of planets above the southeastern horizon before dawn. For most, the silvery celestial beacon rose predawn in a close pairing with an old crescent Moon on Monday, December 7. But also widely seen from locations in North and Central America, the lunar crescent actually occulted or passed in front of Venus during Monday's daylight hours. This time series follows the daytime approach of Moon and morning star in clear blue skies from Phoenix, Arizona. The progression of nine sharp telescopic snapshots , made between 9:30am and 9:35am local time, runs from lower left to upper right, when Venus winked out behind the bright lunar limb .

Date December 10, 2015
Credit Image Credit & Copyright: Phillip A Cruden
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.