NASA’s ICON launches to study the boundary between Earth and space

ICON was designed to detect and study changes in the ionosphere, a region of the upper atmosphere bombarded by space weather from above and Earth’s weather from below. In particular, its instruments will observe an aurora-like phenomenon called airglow, which will allow it to see how particles move in that region.

The spacecraft will send back data that could help scientists figure out how we can deal with ionospheric interference that affects communication signals. Also, its observations could help us understand why the ionosphere’s weather can cause spacecraft to decay prematurely, as well as know more about the radiation-related health risks it poses to astronauts.

NASA says ICON’s job is important, because it’s not easy observing that part of the atmosphere: it’s too low for most spacecraft and too high for balloons. Nicola Fox, director for heliophysics at NASA Headquarters in Washington, said: “ICON will be the first mission to simultaneously track what’s happening in Earth’s upper atmosphere and in space to see how the two interact, causing the kind of changes that can disrupt our communications systems.”

The spacecraft will spend the next month observing the ionosphere and collecting information. NASA expects it to start sending back its first science data in November.

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