Why does a tiny rock sink to the bottom of a lake, while a giant boat can stay afloat? When any object hits water, it displaces some amount of water. To float, the object needs to be lighter than the ...

But deep in my heart I knew there are no more floating paper boats in these thirsty plains craving for some thick pearly raindrops. All I hoped was, "When night comes, I bury my face in my arms and ...

Throwing a paper aeroplane on Earth is simple: fold, flick, and watch it glide. But what if you tried that same move in outer space? No gravity pulling it down, no air to help it fly, and no wind to ...