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Grab bag: "Rocky" exoplanet, molten lunar core, Rhea close encounter

Emily Lakdawalla • January 10, 2011

The Kepler exoplanet hunting mission has made news today with a report of "its first rocky planet."

Help to hunt for planets!

Emily Lakdawalla • December 16, 2010

The Planet Hunters website, like Zooniverse's other projects, is very, very easy to get up and running.

Join Our Galactic Quest for Exoplanets

Susan Lendroth • September 30, 2010

With the astronomical community is buzzing with news of an exoplanet found in a star's habitable zone, The Planetary Society will co-sponsor a special event that will be streamed live on Monday, October 4.

From the Ground and from Space, New Planetary Systems Unveiled

Amir Alexander • August 27, 2010

Two nearly simultaneous announcements by scientists that they have detected entire planetary system deep in space have set the astronomical community abuzz.

Hubble turns 20

Emily Lakdawalla • April 23, 2010

Tomorrow is the 20th anniversary of the launch of the Hubble Space Telescope. It's hard to believe it's been going strong for so many years.

Evaporating exoplanet

Emily Lakdawalla • January 06, 2010

CoRoT-7b was the first unambiguously rocky planet to be discovered and was quite small, at under five Earth masses. But a press release issued today suggests that its history probably has little to do with Earth's.

Kepler discovers its first five exoplanets

Bruce Betts • January 04, 2010

Congratulations to NASA's Kepler mission team on their announcement of the discovery of its first five exoplanets (planets around other stars).

Two cool discoveries today: icy-hot exoplanet and smallest ever Kuiper Belt object

Emily Lakdawalla • December 16, 2009

There are two cool stories circulating today on the theme of discovering new places in the cosmos.

Europlanet : CoRoT - Preliminary Results

Doug Ellison • August 20, 2007

ESA's planet-hunting satellite COROT bagged its first exoplanet in observations of the star COROT-Exo-1.

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