Mars Closest to Earth Tonight; Best V  A graphic shows the last seven times Mars neared Earth while in opposition ...
"Death Star" Galaxy Found Blasting Sm  A composite image (top) shows a never-before-seen spectacle: a "Death Star"...
Building Blocks of Life Formed on Ear  A chunk of 4.5-billion-year-old Martian rock was found in 1984 in the Allan...
Saturn's Rings as Old as Solar System  An artist's illustration shows a close-up view of ring particles against th...
Riddle of Mars's Mysterious "Spiders,  New images from NASA's orbiting HiRise camera have revealed some of the sec...
"Year's Best" Meteor Shower to Peak D  A Geminid meteor streaks across swirling stars in a time-elapsed photo take...
Saturn's "Flying Saucer" Moons Made M  An illustration of Saturn's moon Atlas shows the bulging equatorial ridge t...
Sun's Mysterious Waves Found; May Be   A large plume of gas known as a prominence shoots hundreds of thousands of ...
Dark Matter May Have Powered Universe  An artist's conception shows a "dark star"—a scorching hot, dark-matter-po...
Moon Formed Volcanoes Early, Rock Stu  Researchers studying an ancient moon rock that crashed onto Earth found sol...

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