NASA

It's been a busy weekend for the space station. On Friday, three astronauts — two Russians and one American — docked at the ISS.

Flying people to an asteroid is really hard, so NASA wants to bring part of it to them. But some former astronauts say the $2 billion plan was born of politics and budget cuts, and makes little sense.

The mission aims to circle a hill-sized asteroid for two years, then skim its surface and bring a hearty sample of 4.5 billion-year-old dirt back to Earth.

Alex Longo hopes to be the first person to walk on Mars. In the meantime, the Raleigh, N.C., sophomore has suggested a landing site for the next rover mission. His pick is one of four finalists.

Enjoy Juno's trip to Jupiter — after that we'll see a little gap in planetary science missions from the U.S. That's because a NASA budget crunch several years ago left fewer missions in the pipeline.

The module known as BEAM can be folded so it takes up less room in a cargo rocket, and then expanded once it reaches space. Or at least that's the hope.

Of the more than 1,200 planets in the latest trove turned up by NASA's Kepler Space Telescope, about half seem to be rocky, like Earth.

The InSight mission, which would send a lander to detect marsquakes and study the planet's interior, was scheduled for this month. It has been delayed because a pivotal piece of equipment was flawed.

Two holographic devices made by Microsoft and NASA are scheduled to lift off in a spacecraft from Cape Canaveral this Sunday on a resupply mission headed…

The U.S. has been wanting to ferry astronauts from U.S. soil to the International Space Station, but for now, American astronauts rely on Russia to get to…