This lesson covers the topic of human bones and joints. Students learn about the skeleton, the number of and types of bones in the body, and how outer space affects astronauts' bones. Students also learn how to take care of their bones...

The Why Files have provided an article that explores the health effects of space travel. The site focuses on life on a space station.

Discover more about the late-breaking research into DNA repair shops located in the cell. The work is being done by NASA scientists who are interested in the effects of radiation on astronauts. (Nov. 7, 2007)

Buzz Aldrin, a former astronaut who walked on the moon, was evacuated from the South Pole after his medical condition deteriorated, according to a release.

One of the greatest dangers of space travel is the development of cancer through exposure to radiation in space. Scientists discuss studies of the development of cancer and its relation to this particular type of radiation.