Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...
A groundbreaking study has unveiled Antarctica's hidden, rugged topography beneath its ice sheet, revealing mountains, ...
Ancient shoreline features hint that water on Mars once formed a vast ocean.
Spacecraft orbiting the Red Planet have helped researchers map out an ancient coastline that surrounded a large ocean billions of years ago ...
Arcadia Planitia does not draw attention in the way Mars’s great canyons or volcanoes do. It sits quietly across the northern ...
In a landmark study published in Science, researchers have unveiled a high-resolution map of the Antarctic bed. This study ...
A huge bar of iron has been discovered lurking inside the iconic Ring Nebula. The structure is enormous, spanning hundreds of ...
ESA's first mission to another world, the Mars Express orbiter, began circling the Red Planet on June 2, 2003. Ever since, ...
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Are there thunderstorms on Mars? A planetary scientist explains the red planet’s dry, dusty storms
Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...
Astronomy on MSN
Jan. 18, 2004: Mars Express maps the Red Planet's south pole
On Jan. 18, 2004, the European Space Agency's Mars Express successfully mapped Mars' south pole, and, in a first, revealed ...
The Ring Nebula, also known as Messier 57, sits about 2,000 light-years from Earth. It is a planetary nebula—a misleading ...
Scientists have discovered there is more to Antarctica than meets the eye. A new map of the landscape beneath the frozen ...
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