NASA’s Sunita Williams becomes the commander of the International Space Station for the second time in history.

NASA astronaut Sunita Williams has assumed command of the International Space Station (ISS) for the second time. Her previous ...

China’s Imperiled Astronauts Illustrate the Dangers of Space Debris

Not long before Shenzhou-20 was set to carry the three home it was struck by a piece of space debris, leaving cracks in one ...