caption: Two dramatically different faces of our Red Planet neighbor appear in these comparison images showing how a global dust storm engulfed Mars with the onset of Martian spring in the Southern Hemisphere. When NASA's Hubble Space Telescope imaged Mars in June, the seeds of the storm were caught brewing in the giant Hellas Basin (oval at 4 o'clock position on disk) and in another storm at the northern polar cap. Both images are in natural color, taken with Hubble's Wide Field Planetary Camera 2. Photo by NASA, <PERSON> of Cornell University, <PERSON> of Space Science Institute and The Hubble Heritage Team
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