NASA: A Puzzling Collapse of Earth’s Upper Atmosphere

Layers of Earth’s upper atmosphere. Credit: John Emmert/NRL. (Click on image to enlarge.)July 15, 2010: NASA-funded researchers are monitoring a big event in our planet’s atmosphere. High above Earth’s surface where the atmosphere meets space, a rarefied layer of gas called “the thermosphere” recently collapsed and now is rebounding again.“This is the biggest contraction [...] continue reading world news