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Bruce Murray Space Image Library

Dust storm at the Viking 1 lander site, 1977

Dust storm at the Viking 1 lander site, 1977
Dust storm at the Viking 1 lander site, 1977 A comparison of two Viking 1 color images taken on sols 282 and 324 shows how a Martian dust storm severely limited the amount of sunlight reaching the ground. "Tau," a measure of the sky's opacity, was very high, between 5 and 6. NASA / JPL-Caltech / color composite by Olivier de Goursac