Rocky Alien Planets: What The Heck Is On Their Surfaces?

We don't have the budget yet to send Star Trek's U.S.S. Enterprise to probe the surface of strange new worlds, but luckily for humanity, astronomers are figuring out techniques to do that without even needing to leave Earth. (...)Read the rest of Rocky Alien Planets: What The Heck Is On Their Surfaces? (288 words) ©