News tagged with extrasolar planets

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Destroyer of worlds

(PhysOrg.com) -- Astronomers, in addition to discovering extrasolar planets (about 500 of them currently have known orbital parameters), have detected excess, warm infrared dust emission around many stars.

Sep 24, 2010
4.8 / 5 (16) 8 | with audio podcast

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

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

Astronomers spot second smallest exoplanet

(PhysOrg.com) -- Astronomers from the California Institute of Technology and other institutions, using the highly sensitive 10-meter Keck I telescope atop Hawaii's Mauna Kea, have detected an extrasolar planet ...

Jan 13, 2010
4.9 / 5 (7) 1 | with audio podcast

Astronomers discover 'tilted planets'

(PhysOrg.com) -- University of Exeter, UK, research has added to a growing evidence that several giant planets have orbits so tilted that their orbits can be perpendicular or even backwards relative to their ...

Dec 22, 2009
4.4 / 5 (17) 4

The Hot Saturn Exoplanet

(PhysOrg.com) -- Of the roughly 350 known exoplanets (i.e., extrasolar planets), the one orbiting the star HD149026 is unique.

Oct 02, 2009
4.4 / 5 (11) 3