Exoplanet Count Rises With New Discoveries

With several space- and ground-based telescopes, as well as dedicated space missions searching for exoplanets, or planets orbiting other stars, the count of new discoveries keeps rising. The current total now stands at 287 planets.

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Hubble Finds New Class of Planets

Astronomers have identified worlds that circle their respective stars in less than a day, and in one case, 10 hours. Jorge Ribas reports.