Soviet cosmonaut Alexei Leonov, who in 1965 became the first person in history to spacewalk, has died aged 85. Tethered to his spaceship by a 4.8m (16ft) cable, the Russian floated above the Earth ...

Boeing, which has lost more than a billion ... NASA has two options for getting its astronauts to and from the space station. They can tag along on a Russian Soyuz spacecraft, or rely on SpaceX ...

Astronaut Jim Lovell has since discussed the race to the moon with his former competitors. "We talk to our Russian friends ... One was Vietnam. We lost it. And one was the space program and ...

Astronauts who stayed at the former Soviet Union's Mir space station reportedly lost an average of 1 to 2% of their bone mass per month. The research team further investigated how much bone ...