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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Past Oceans on Mars? Maybe - Maybe Not

Did Mars once have oceans? Dueling theories provide conflicting pasts for the Red Planet. Image Credit: NASA / Goddard Space Flight Center

The debate over the history of water on Mars first began even before the first spacecraft flew by the planet. But after Mariner 4 scientists learned that Mars was currently devoid of [...]