NASA airs space station tour

HOUSTON, June 24 (UPI) -- The U.S. space agency says it is broadcasting a high-definition tour of the International Space Station recorded by the Expedition 20 crew.

The program, aired every hour on the hour, also includes an explanation of a Canadian experiment on the station that examines how humans perceive up and down without gravity as a reference.

"The 20-minute tour, which documents the full 167 feet of the space station's pressurized modules, was recorded by NASA Flight Engineer Michael Barratt to show Mission Control how equipment and supplies are arranged and stored, and to provide engineers with a detailed assessment of each module-to-module hatchway," NASA said.

Canadian Space Agency astronaut Bob Thirsk provides a five-minute overview of the Bodies In the Space Environment experiment. That experiment looks at the relative contributions of internal and external cues that allows humans to orient themselves in the absence of gravity.

The videos also will be broadcast online in standard-definition format on NASA Television's public and media channels.

NASA TV streaming video, VideoFile, downlink and scheduling information are available at http://www.nasa.gov/ntv.