An illustration of what it might look like to visit Kepler 16 b, a nearby exoplanet with twin suns. Credit: NASA Imagine a planet where molten diamond rains from the sky, hurled sideways by winds that ...

Earth, though seemingly huge for us, is just a Lilliputian blue-green ball swimming around in the infinite lagoon of dark space. The fathomless darkness of this space often makes scientists stay up at ...