Space

"The London Marathon is a worldwide event. Let's take it out of this world," says British astronaut Tim Peake, who will run the course virtually, on a treadmill in the International Space Station.

The piece of rocket, most likely from the unmanned SpaceX Falcon 9 that blew up after takeoff in June, was covered in barnacles and originally mistaken for a dead whale.

NASA is building a 2-pound helicopter drone that would help guide the vehicle on the Red Planet's surface. That way, the rover wouldn't need to wander as much to find its way around.

The dwarf planet most recently is famous for the two mysterious, bright spots on its surface.

Blue Origin, the space company founded by Amazon billionaire Jeff Bezos, has sent a craft past the edge of space and then landed its rocket safely – and vertically — in Texas.

A random search has turned up a dwarf planet orbiting roughly ten billion miles away. The far-off world is tiny, and probably very, very cold.

Hanging in orbit just 3,700 miles above the surface of Mars, the planet's closest moon, Phobos, seems to be undergoing a "structural failure," NASA says.

The International Space Station conducted a spacewalk this week to mark 15 years in space. Three people who've walked in space share their miraculous — and miserable — experiences.