In an unpredictable era that has seen the Cold War rekindled, it's worth remembering a remarkable event that took place 50 years ago when the first crewed international space mission, carried out ...

NASA astronaut Don Pettit returns to Earth on a Soyuz spacecraft later this week. Read about his extraordinary ride home on ...

Theoretically, Sunbird's tremendous speeds could cut mission times to Mars in half, from seven to eight months to about four.