Kepler-444 could help pinpoint when planets started to form
The rock will hurtle through space at just three times the distance between the Earth and the sun
This discovery, if accurate, could completely redraw the map of the Solar System
A remarkable spacecraft approaches the solar system's last known planet (and yes, it's a planet)
Best view is Saturday night and early Sunday morning
Every summer about this time of year, the Earth passes through the orbital path of the Swift-Tuttle comet. That might sound a little alarming, but don’t...
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In this episode: A Six-Tailed Asteroid, India's Mars Mission, Earth-like Exoplanets, Mapping the Russian Meteor's Path, and Lunar Topography. ...