During its 4.5-billion-year life span, Earth’s been hit by countless asteroids. (Despite Jupiter’s noble attempts at defending it.) But while it’s easy to imagine the damage they’ve done, just how big ...
Jupiter has 80 known moons, with more still being discovered by astronomers and amateur sky-watchers alike. That’s second only to Saturn’s 83 moons in our Solar System. The below video does a cool ...
NASA's leading planet-hunting spacecraft has spotted its second planet that matches Earth's size and may be able to retain liquid water — and both worlds orbit the same star. NASA's Transiting ...
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