NASA beams live and recorded video content into low-earth orbit, allowing astronauts to watch live video in outer space. A special broadband connection carries the video into space on an as-requested basis. Astronauts wa... More » Science Astronomy Space Travel

The life support system installed in the space station helps astronauts live in space for extended periods of time. While in space, the life support system provides oxygen and filters out the carbon dioxide exhaled by th... More »

Astronauts carry out a number of duties in space, including equipment inspection, medical experiments, monitoring Earth, cleaning tools and carrying out repairs, updating computer equipment and taking pictures of various... More » Business & Finance Careers

Space radiation is a hazard to humans in orbit outside the Earth, and it would pose an even bigger threat to astronauts on Mars. The "Red Planet" is closer to the sun and gets much more radiation than Earth, which could ... More » Science Astronomy Space Travel

The survival needs of astronauts in space depend on the amount of time in question, but for standard, short missions, they require protection against the frigid temperatures and protection from solar glare and the vacuum... More »

Skylab was an experimental space station designed to study the effects that living and working in space for extended periods would have on astronauts. Skylab also conducted nearly 300 experiments that provided scientists... More »

As of September 2009, 505 astronauts from 38 different countries had been active participants in manned space flights. This data is sourced from The Astronautic Records Commission of the Fédération Aéronautique Internati... More »