Taxonomy term

exoplanet

In or Out? Has Voyager left the solar system?

San Francisco - There is a possibility that Voyager, the U.S. spacecraft launched in 1977, which is thought to have left the heliosphere and entered interstellar space last year, could still be "inside," said Ed Stone, Voyager project chief scientist, today at the annual meeting of the American Geophysical Union in San Francisco.

09 Dec 2013

Hot Earth orbits closest star system

A hot Earth-sized planet circles Alpha Centauri, the sun's nearest stellar neighbor, a team of astronomers led by Xavier Dumusque of the University of Geneva reports this week in Nature. They detected the tiny gravitational tug this world exerts on its star.

16 Oct 2012

Exoplanet forecast: Quartz with a chance of feldspar

Next time you’re unhappy with the weather, be glad it’s not raining rocks. That seems to happen on CoRoT-7b, a hot, Earth-like planet about 500 light-years away from us. A new modeling study suggests that the exoplanet’s atmosphere is filled with the chemical components of rock, such as oxygen, sodium and silicon monoxide, and whenever these gases condense into clouds, rocky rain likely hammers down onto CoRoT-7b’s sweltering surface.

11 Jan 2010

Scientists find watery super-Earth

The search for Earth-like planets has never looked better. Scientists say they have discovered a water-rich planet that is only 2.7 times larger than Earth. Although positioned just outside the habitable zone for life, the planet gives scientists their best hope yet that other Earth-like planets exist in our universe.

16 Dec 2009

Super-Earths: Mirrors of our world?

Fifty light-years from Earth, in the constellation Pegasus, burns a yellow star not unlike our sun. The star, called 51 Pegasi, was one of 142 stars under the watchful gaze of Swiss astronomers Michel Mayor and Didier Queloz of the University of Geneva in 1994. From the La Silla Observatory at the southern end of Chile’s vast Atacama Desert, Mayor and Queloz were tracking how these stars move in the sky, hoping to determine whether the stars were alone — or whether any of them might be accompanied by a planet or two.

31 Jul 2009

Down to Earth With: Marc Kuchner

Marc Kuchner likes to joke that when he feels sociable at a party, he tells fellow guests that he is an astronomer. But when he wants to be left alone, he says, he tells them he is an astrophysicist. At NASA’s Goddard Space Flight Center in Greenbelt, Md., Kuchner spends his time thinking about planets outside the solar system and looking for ways to better see them — and he’s devoted some of his time to working on the Terrestrial Planet Finder, a proposed NASA mission to look for and image Earth-like exoplanets. For his work on improving the detection and understanding of exoplanets, SPIE, an international society that advances light-based research, awarded him the group’s Early Career Achievement Award earlier this year.

23 May 2009

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