4 ms·
IIRC, it's a sensor that uses reflected gamma rays to measure the distance to the ground. When the ground is close enough, braking rockets are fired to reduce t
by trothamel 11y ago
IIRC, it's a sensor that uses reflected gamma rays to measure the distance to the ground. When the ground is close enough, braking rockets are fired to reduce the touchdown velocity, making a land-landing more pleasant.
- kevan 11y ago>making a land-landing more pleasant. Or at least a bit less unpleasant http://www.slate.com/blogs/bad_astronomy/2014/06/08/back_to_earth_how_astronauts_get_back_from_the_space_station.html http://www.slate.com/blogs/bad_astronomy/2014/06/08/back_to_...