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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 largest version available.

A Global Dust Storm on Mars

Explanation: A dust storm on Mars can involve nearly the entire planet. As spring descended on the southern hemisphere of the red planet this June and July, a global dust storm raged. Pictured above is the storm on July 8 as it spread up from the south , oriented on the lower right. The image was captured by the robot Mars Global Surveyor spacecraft which continues to orbit the red planet . A smaller dust storm is visible in the north to the left of the dark giant volcano Ascraeus Mons . Far-reaching dust storms also occur on planet Earth .

Date October 1, 2001
Credit Credit: Malin Space Science Systems , MGS , JPL , NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.