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News Release Archive:

News Release 722 of 967

July 15, 1997 01:00 PM (EDT)

News Release Number: STScI-1997-24

Hubble Sees Rapid Weather Changes On Mars, New Dust Activity

July 15, 1997: Astronomers using the Hubble telescope to track weather on Mars and how it might affect the Pathfinder landing site in Ares Vallis report that a large dust storm seen south of the site only 12 days earlier has dissipated. However, a new dust storm has appeared in the polar region, about 1,200 miles (2,000 kilometers) due north of the landing site.

The Hubble researchers conclude that Pathfinder landed during a period when large changes in the regional distributions of dust and clouds were taking place on Mars. The green cross on the bottom picture identifies the Pathfinder landing site.

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Credit: Steve Lee (Univ. Colorado), Phil James (Univ. Toledo), and Mike Wolff (Univ. Toledo) and NASA