Russia says space station leak may be sabotage

Russia launched checks Tuesday after its space chief said an air leak on the International Space Station last week could have been deliberate sabotage.

Astronaut: SpaceX Dragon beats shuttle, Soyuz for launching

The most experienced astronaut on SpaceX's newly launched crew said Thursday that riding a Dragon capsule to orbit is like being inside the actual mythical beast, and a lot more fun than NASA's shuttles or Russian flights.

Dormant viruses activate during spaceflight

Herpes viruses reactivate in more than half of crew aboard Space Shuttle and International Space Station missions, according to NASA research published in Frontiers in Microbiology. While only a small proportion develop symptoms, ...

New measurements show moon has hazardous radiation levels

Future moon explorers will be bombarded with two to three times more radiation than astronauts aboard the International Space Station, a health hazard that will require thick-walled shelters for protection, scientists reported ...

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Astronaut

An astronaut or cosmonaut is a person trained by a human spaceflight program to command, pilot, or serve as a crew member of a spacecraft. While generally reserved for professional space travelers, the term is sometimes applied to anyone who travels into space, including scientists, politicians, journalists, and tourists.

Until 2003, astronauts were sponsored and trained exclusively by governments, either by the military, or by civilian space agencies. However, with the sub-orbital flight of the privately-funded SpaceShipOne in 2004, a new category of astronaut was created: the commercial astronaut.

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