Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. When NASA’s ...

Europa’s icy surface hides an ocean of liquid water underneath, making it a prime target in the search for extraterrestrial life. NASA / JPL-Caltech / SETI Institute When NASA’s Europa Clipper ...

Add Yahoo as a preferred source to see more of our stories on Google. When NASA’s Europa Clipper aims to launch on its highly anticipated mission to an icy moon in October, the spacecraft will carry a ...