AmericaSpace Launch Countdown

Next Launch ORB-3 on a Antares rocket from Wallops Island, VA
scheduled for:
27 Oct 14 22:44:00 GMT
27 Oct 14 18:44:00 EDT

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Is Mars Geologically Active?

Global view of Mars as seen by the Viking 1 orbiter in 1980, showing the Valles Marineris (center). Photo Credit: NASA

A paper in an upcoming special Mars-based issue of the planetary science journal Icarus has examined the small polygonal structures that cover large regions of northern Mars. The paper, by J. Korteniemi and [...]