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2013

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  • Van Allen Probes Discover a New Radiation Belt

    Van Allen Probes Discover a New Radiation Belt

    Feb. 28, 2013

    Earth's radiation belts were one of the first discoveries of the Space Age. A new finding published in today's issue of Science shows that we still have much to learn about them. NASA's twin Van Allen Probes, launched just last August, have revealed a previously unknown third radiation belt around Earth.

  • What Exploded over Russia?

    What Exploded over Russia?

    Feb. 26, 2013

    Two weeks after an asteroid exploded over Russia's Ural mountains, scientists are making progress understanding the origin and make-up of the unexpected space rock. This week's ScienceCast presents their latest results.