Know thy star, know thy planet

When it comes to exoplanets, astronomers have realized that they only know the properties of the planets they discover as well as they know the properties of the stars being orbited. For a planet's size, precisely characterizing ...

A new Goldilocks for habitable planets

The search for habitable, alien worlds needs to make room for a second "Goldilocks," according to a Yale University researcher.

Team catalogs most likely 'second-Earth' candidates

Looking for another Earth? An international team of researchers has pinpointed which of the more than 4,000 exoplanets discovered by NASA's Kepler mission are most likely to be similar to our rocky home.

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