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 (33) 21 | with audio podcast

Radio waves carry news of climate change

The ionosphere, one of the regions of the upper atmosphere, plays an important role in global communications. Ionized by solar radiation, this electricity-rich region is used for the transmission of long ...

Jul 30, 2013
4 / 5 (8) 1

Perseid fireballs

In astronomy, there's nothing quite like a bright meteor streaking across the glittering canopy of a moonless night sky. The unexpected flash of light adds a dash of magic to an ordinary walk under the stars.

Jul 30, 2013
5 / 5 (2) 0