Recipe for other Earths

David A. Aguilar, Harvard-Smithsonian Center for Astrophysics
January 5, 2015
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David A. Aguilar, Harvard-Smithsonian Center for Astrophysics

How do you make an Earth-like planet? The "test kitchen" of Earth has givenĀ us a detailed recipe, but it wasn't clear whether other planetary systems would follow the same formula. Now, astronomers have found evidence that the recipe for Earth also applies to terrestrial exoplanets orbiting distant stars. (Image credit: David A. Aguilar, Harvard-Smithsonian Center for Astrophysics)