News tagged with upper atmosphere

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Electric-blue clouds appear over Antarctica

Data from NASA's AIM spacecraft show that noctilucent clouds are like a great "geophysical light bulb." They turn on every year in late spring, reaching almost full intensity over a period of no more than ...

Dec 24, 2013
4.4 / 5 (14) 0 | with audio podcast

ESA SWARMing Earth's magnetic field

ESA's three-satellite Swarm constellation was lofted into a near-polar orbit by a Russian Rockot launcher this afternoon. For four years, it will monitor Earth's magnetic field, from the depth of our planet's ...

Nov 25, 2013
3.7 / 5 (3) 1

What happened to Mars? A planetary mystery

Billions of years ago when the planets of our solar system were still young, Mars was a very different world. Liquid water flowed in long rivers that emptied into lakes and shallow seas. A thick atmosphere ...

Nov 13, 2013
4.8 / 5 (32) 21 | with audio podcast