X-37B Space Plane Returns: 5 Theories About Its Secret Mission
X-37B Space Plane
October 17th, 2014
The top-secret nature of the X-37B missions has sparked a number of conspiracy theories. Here are some ideas about the X-37B's purpose.
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How to Safely Watch Next Week's Partial Solar Eclipse
Partial Solar Eclipse as Seen in Juneau, AK, on Oct. 23, 2014
October 16th, 2014
Millions of people across North America will have a chance to observe a partial solar eclipse next week, weather permitting.
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Comet Buzzes Mars in Once-in-a-Lifetime Flyby
Artist's Concept of Comet Siding Spring Flying by Mars
October 20th, 2014
Comet Siding Spring came within just 87,000 miles of the Martian surface at 2:27 p.m. EDT today — about one-third of the distance between Earth and the moon. The comet barreled by at 126,000 mph relative to the Red Planet, NASA officials said.
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Comet's Mars Flyby Sunday Has Scientists Abuzz
Artist's Concept of Comet Siding Spring Flying by Mars
October 17th, 2014
Comet Siding Spring will zoom within 87,000 miles of Mars at 2:27 p.m. EDT on Sunday (Oct. 19). Scientists will observe the flyby using the fleet of spacecraft already at Mars, studying the comet and any effects its dust has on the planet's atmosphere.
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Volcanoes on the Moon May Have Erupted During the Dinosaur Age
Irregular mare patch on moon
October 14th, 2014
Scientists previously thought that the moon's volcanic activity died down a billion years ago. But new data from NASA's Lunar Reconnaissance Orbiter, or LRO, hints that lunar lava flowed much more recently, perhaps less than 100 million years ago.
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Comet Will Buzz Mars Sunday: How to See It in Telescopes
Comet Siding Spring Sky Map Oct. 19, 2014
October 16th, 2014
A comet is on course for a super-close approach with the planet Mars this Sunday (Oct. 19) in a rare celestial encounter. If you have a moderate-size telescope, you might be able to spot the icy wanderer as it nears the Red Planet, weather permitting.
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Search for Mars Life Starts on Earth
Licancabur volcano
October 9th, 2014
Frigid lakes bombarded by UV radiation and boiling, acidic springs are some of the otherworldly Earth environments where scientists plan to hunt for clues to life on Mars.
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