News tagged with exoplanets

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Water-Ice Super-Earths

A "super-Earth" is a planet around another star (an "exoplanet") whose mass is less than about ten times that of the Earth. Of the 480 or so extrasolar planets now known, most have masses larger than the mass ...

Aug 27, 2010 4.7 / 5 (17) 0 | with audio podcast

Building Planet Earth

A new study shows how rocky planets are formed from the manic swirl of gas and dust that surround a young star, and determines what chemical building blocks are used to construct the planets. Understanding ...

Oct 22, 2009 4.4 / 5 (9) 1