News tagged with outer layers

Water Planets

Of the roughly 420 extra-solar planets now known, about a dozen are in the newly named category of "super-earths," planets whose masses are in between of two and about fifteen earth-masses.

Space & Earth / Astronomy

Jan 22, 2010 | 4.6 / 5 (18) | 4 |

Shrinking atmospheric layer linked to low levels of solar radiation

Large changes in the sun's energy output may drive unexpectedly dramatic fluctuations in Earth's outer atmosphere.

Space & Earth / Earth Sciences

Aug 26, 2010 | 4.3 / 5 (6) | 18 |