• Dawn to Split Asteroid Differences
    It's called Dawn, and in a little more than a year, this spacecraft will blast off from Florida, bound for two separate asteroids: Vesta and Ceres. Visiting the two most massive asteroids in our Solar System will be an ambitious undertaking; maybe one of
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  • Going Up, Next Floor
    Science fiction writer Arthur C. Clarke famously predicted that we'd see space elevators 50 years after people stopped laughing at the idea. Jerome Pearson has been thinking about space elevators since the early 1970s.
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  • The Search for More Earths
    When astronomers first realized that the stars in the sky were like our Sun, only more distant, they wondered if those stars had planets too. And if they have planets, is there life? Intelligent life? There's an answer - yes or no - but we
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