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April 04, 2014

Gravity measurements confirm subsurface ocean on Enceladus
Pasadena CA (SPX) Apr 04, 2014
In 2005, NASA's Cassini spacecraft sent pictures back to Earth depicting an icy Saturnian moon spewing water vapor and ice from fractures, known as "tiger stripes," in its frozen surface. It was big news that tiny Enceladus-a mere 500 kilometers in diameter-was such an active place. Since then, scientists have hypothesized that a large reservoir of water lies beneath that icy surface, possibly fueling the plumes. Now, using gravity measurements collected by Cassini, scientists have confirmed that ... read more

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Ancient volcanic explosions shed light on Mercury's origins The surface of Mercury crackled with volcanic explosions for extended periods of the planet's history, according to a new analysis led by researchers at Brown University. The findings are surprising ... more		Land a Lunar Laser Reflector Now! As we consider the next spacecraft to land on the Moon, let's not overlook an increasing problem in scientific research. The laser reflectors already on the Moon are getting old, and need to be repl ... more		New research finds 'geologic clock' that helps determine moon's age An international team of planetary scientists determined that the Moon formed nearly 100 million years after the start of the solar system, according to a paper to be published April 3 in Nature. Th ... more
				Cassini reports sub-surface ocean on Enceladus Enceladus-one of Saturn's smaller satellites-has joined the ranks of Titan and Europa as a moon that appears to have liquid water splashing around inside of it, researchers say. New gravity data fro ... more		Using ethic frameworks for decisions about health standards on long duration spaceflights NASA should use an ethics framework when deciding whether, and under what conditions, spaceflights that venture outside low Earth orbit or extend beyond 30 days are acceptable if they do not meet cu ... more

CubeSats, SmallSats and MicroSats

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Scientists date Moon at 4.470 billion years

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