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Scientists Find Planets Out of This World

Discoveries of, info about new heavenly bodies pour into NASA

By Katherine Thompson,  Newser Staff

Posted Mar 24, 2008 9:30 AM CDT

(Newser) – Humans took centuries to discover the other planets in the solar system, but in the 13 years since the first additional planet was identified, planetary scientists have found 277 more worlds orbiting other suns. And those extrasolar planets are just the confirmed ones—many more are suspected, and excitement among scientists is building, reports the Washington Post.

"This is an absolutely astounding time for this field," says a researcher at NASA's Jet Propulsion Laboratory. "We're not only finding them rapidly and in great variety, but we're starting to characterize them," which means learning about their orbits, atmospheres, and in the case of one announced last week, their organic molecules. The next wave: detecting smaller, earth-sized planets.

A false-color image taken by NASA's Mars Exploration Rover Opportunity's camera showing the dune crests in the Endurance Crater.
A false-color image taken by NASA's Mars Exploration Rover Opportunity's camera showing the dune crests in the Endurance Crater.   (Associated Press)
Saturn's frigid moon Titan as it approaches the brilliant limb of Saturn. Scientists announced they have found the best evidence yet that an ocean may be hidden below the surface.
Saturn's frigid moon Titan as it approaches the brilliant limb of Saturn. Scientists announced they have found the best evidence yet that an ocean may be hidden below the surface.   (Associated Press)
A close up view by the Cassini spacecraft of the Saturn moon Enceladus' northern pole. The probe swept through the edge of the geysers and measured their chemical makeup.
A close up view by the Cassini spacecraft of the Saturn moon Enceladus' northern pole. The probe swept through the edge of the geysers and measured their chemical makeup.   (Associated Press)
In this false color image released by NASA showing an active avalanche on Mars taken by the Reconnaissance Orbiter is the first ever image of active avalanches near the Red Planet's north pole.
In this false color image released by NASA showing an active avalanche on Mars taken by the Reconnaissance Orbiter is the first ever image of active avalanches near the Red Planet's north pole.   (Associated Press)
Young star HD 61005, dubbed The Moth. Its shape is produced by starlight scattering off dust and is giving astronomers new insight into the formation and evolution of planetary systems.
Young star HD 61005, dubbed "The Moth." Its shape is produced by starlight scattering off dust and is giving astronomers new insight into the formation and evolution of planetary systems.   (Associated Press)
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