December 6, 2012

Two Satellites Map the Moon, Inside and Out

John Timmer, Ars Technica

AP Photo

If you're spending the money to put something in orbit around the Moon, you'll likely stuff it full of as many scientific instruments as it can fit. But now NASA has sent not one, but two spacecraft to the Moon with only a single scientific instrument. Despite the light load, the GRAIL mission turns out to have been a phenomenal success, as it's providing the clearest map of the composition of our closest neighbor. The results show a world shaped by a combination of impacts (some of which probably penetrated to the Moon's mantle) and the stretch marks of an early expansion in its size.

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TAGGED: Moon, Gravity, Satellites


October 16, 2013
Jellyfish Born in Space Have Hard Time on Earth
Rebecca Helm, DSN
Why send jellies to space? Well, because it’s awesome (true for anything in space), but mostly because of little crystals jellies keep in their bodies, and what these crystals can tell us about long-term human space travel. more ››