REx sample return capsule contained rock from the asteroid Bennu. NASA/Keegan Barber Mary Magnuson, Collecting asteroid samples China’s Tianwen-2 asteroid sample return mission is set to launch this ...

On May 28, China launched Tianwen-2, a robotic mission that aims to land on a tumbling near-Earth asteroid barely the size of a conference room, extract samples and send them back to Earth. Sign in by ...