News

Martian history: Finding a common denominator with Earth's

Earth and Mars

A team of scientists, including Carnegie's Conel Alexander and Jianhua Wang, studied the hydrogen in water from the Martian interior and found that Mars formed from similar building blocks to that of Earth, but that there were differences in the later evolution of the two planets. This implies that terrestrial planets, including Earth, have similar water sources--chondritic meteorites. However, unlike on Earth, Martian rocks that contain atmospheric volatiles such as water, do not get recycled into the planet’s deep interior. Their work will be published in the December 1 issue of Earth and Planetary Science Letters. It is available online.

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Long Lost Moon of Jupiter Found

Lost Jupiter moon

The Jupiter moon S/2000 J11 was discovered in 2000 and observed for only about one month before it became lost in Jupiter's glare. It was not seen again over the next several years. Now, Scott S. Sheppard has solved the puzzle by rediscovering S/2000 J11 in images obtained at the Magellan Telescope in 2010 and 2011.

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