News tagged with extrasolar planets

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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

A New Way to Find Earths

Astronomers have used a completely new technique to find an exotic extrasolar planet. The same approach might even be sensitive enough to find planets as small as the Earth in orbit around distant stars.

Jul 09, 2010 4.9 / 5 (22) 5 | with audio podcast

Plentiful and Potential Planets

Two planet-hunting telescopes - CoRoT and Kepler - are keeping astronomers hard at work cataloging far-distant planets that orbit other stars in our galaxy. The search for distant planets is essential for ...

Jun 23, 2010 5 / 5 (6) 0

The Kepler Mission

( -- Since the first planet around another star (an "extrasolar planet") was discovered by SAO astronomers and others in 1989, over 450 extrasolar planets have been found. Their study now comprises a whole new ...

Apr 26, 2010 5 / 5 (2) 1

Martian Weather

The Mars Global Surveyor (MGS) is a NASA mission that arrived at Mars in September, 1997, and for nine years circled the planet every two hours in a polar orbit (that is, traveling from the north pole to the ...

Mar 16, 2010 not rated yet 0

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.

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