来自MSN11 个月
A dead Russian spacecraft almost collided with a NASA satellite. The crash could have sent ...
Two satellites nearly collided in space on Wednesday in a harrowing encounter that LeoLabs, a satellite tracking company, called "too close for comfort." NASA's Thermosphere Ionosphere Mesosphere ...
来自MSN5 个月
NASA finds mysterious force that lofts Earth's atmosphere into space
This image of the Space Shuttle Endeavour ... The topmost layer, the thermosphere, is where ions from the upper atmosphere escape into the solar system. (NASA/Scott Sutherland) For the past ...