What Are These Hollows on Mercury?

by Fraser Cain March 26, 2014

Emily Lakdawalla from the planetary society describes one of the mysteries that’s currently fascinating her. There are strange structures on Mercury which have been called “hollows”. What might they be? Fraser Cain on Google+

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Hubble Discovers Water Plumes Erupting from Europa

by Jason Major December 12, 2013

It’s been known since 2005 that Saturn’s 300-mile-wide moon Enceladus has geysers spewing ice and dust out into orbit from deep troughs that rake across its south pole. Now, thanks to the Hubble Space Telescope (after 23 years still going strong) we know of another moon with similar jets: Europa, the ever-enigmatic ice-shelled moon of […]

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A Dark and Dusty Avalanche on Mars

by Jason Major November 4, 2013

Mars may be geologically inactive but that doesn’t mean there’s nothing happening there — seasonal changes on the Red Planet can have some very dramatic effects on the landscape, as this recent image from the HiRISE camera shows! Jason Major on Google+

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These Antarctic Research Photos Look Like Exploration on Another Planet

by Jason Major October 11, 2013

Some day, human explorers will land a spacecraft on the surface of Europa, Enceladus, Titan, or some other icy world and investigate first-hand the secrets hidden beneath its frozen surface. When that day comes — and it can’t come too soon for me! — it may look a lot like this. One of a series […]

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NASA Scientists Soar Over a Mini Ice Cap

by Jason Major April 29, 2013

It’s quite a long way from Mars, but I can’t help but be reminded of the Red Planet’s ice-covered north pole when looking at this photo taken by Michael Studinger earlier this month, during a recent IceBridge survey flight over Greenland. Called Saunders Island (also Appat Island) the 82-square-mile frozen slab of rock rises from […]

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