weightlessness
)
Astronaut Janice Voss experiencing weightlessness aboard a DC-9 aircraft. Parabolic trajectories are flown by aircraft such as this and the notorious KC-135 ‘vomit comet’, to produce weightless conditions for experimental and training purposes.
)
Rehearsing underwater in the Neutral Buoyancy Laboratory, astronauts Joseph Tanner and Marc Garneau practice for the space walks they will make on STS-97. Their shuttle mission involved the delivery of the integrated truss segment (comprising solar arrays and power distribution system) to the International Space Station.
Apparent loss in weight of a body in free fall. Astronauts in an orbiting spacecraft do not feel any weight because they are falling freely in the Earth's gravitational field (not because they are beyond the influence of Earth's gravity). The same phenomenon can be experienced in a falling lift or in an aircraft imitating the path of a freely falling object.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|
?Sign in  |
|---|