A 460-mile-long stretch of canyon was discovered underneath Greenland's ice sheet by NASA's Operation IceBridge. It runs from the center of the island to the fjord of the Petermann Glacier. NASA's God ...

Meanwhile, the cast appears to be gearing up for their press tour as Pratt posted this hilarious video on his Instagram: As you can see, Pratt’s team covered him in three different-sized Mario toys ...

There is only one way to experience lunar gravity while still on Earth, or rather a few thousand feet above its surface: on a parabolic flight. In this exclusive mini-documentary, Space.com reporter ...