Water on Ganymede, and NASA Needs Your Help Which is a bigger deal to you? The discovery that there’s probably more water on Jupiter’s moon Ganymede than all the oceans on Earth? Or the fact that you can now help NASA find asteroids? Learn about both, then decide for yourself! Facebook Prev Article Next Article Space Checkout these cool gadgets... Related Posts NASA releases mind-blowing flyover of Pluto Did Earth Have Two Moons? Mars One Was a Scam a Finalist Announced The Universe Is Really, Really BIG The Star That Trolled Astronomers What is the universe made of?