When it comes to finding the right kind of planet to target in the search for life elsewhere in the universe, the size of the planet matters.
Space Exploration
Jan 6, 2015
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A team of scientists, led by the University of Toronto's Barbara Sherwood Lollar, has mapped the location of hydrogen-rich waters found trapped kilometres beneath Earth's surface in rock fractures in Canada, South Africa ...
Earth Sciences
Dec 17, 2014
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Today's atmosphere likely bears little trace of its primordial self: Geochemical evidence suggests that Earth's atmosphere may have been completely obliterated at least twice since its formation more than 4 billion years ...
Space Exploration
Dec 2, 2014
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A group of scientists believe that a previously unexplained isotopic ratio from deep within the Earth may be a signal from material from the time before the Earth collided with another planet-sized body, leading to the creation ...
Earth Sciences
Jun 9, 2014
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(Phys.org) —It looks like just another rock, but what Jesse Reimink holds in his hands is a four-billion-year-old chunk of an ancient protocontinent that holds clues about how the Earth's first continents formed.
Earth Sciences
May 29, 2014
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(Phys.org) —A lot can happen to a rock over the course of two and a half billion years. It can get buried and heated; fluids remove some of its minerals and precipitate others; its chemistry changes. So if you want to use ...
Earth Sciences
Apr 11, 2014
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(Phys.org) —A team of researchers from the U.K. and the Netherlands has found evidence of carbonation in a meteorite that was found in the U.S. back in 1931—prior research has proven that the meteorite is actually a rock ...
"Dig deep" to avoid naturally occurring arsenic contamination has been promoted as an answer to obtaining safe water in South Asia, which has experienced mass poisoning. But arsenic has been found in numerous deep wells drilled ...
Environment
Aug 12, 2013
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(Phys.org) —Approaching its 10th anniversary of leaving Earth, NASA's Mars Exploration Rover Opportunity is on the move again, trekking to a new study area still many weeks away.
Space Exploration
Jun 7, 2013
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A mystery of the moon that imperiled astronauts and spacecraft on lunar missions has been solved by a Purdue University-led team of scientists as part of NASA's GRAIL mission.
Space Exploration
May 30, 2013
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