Climate Change at the Edge of Space

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Noctilucent clouds overNykøbing Mors, Denmark, on June 13, 2016. Photo credit: Ruslan Merzlyakov

“noctilucent clouds” (NLCs). They appear with regularity in summer months, shining against the starry sky at the edge of twilight. Back in the 19th century you had to go to Arctic latitudes to see them.

In recent years, however, they have been sighted from backyards as far south as Colorado and Kansas.

Noctilucent clouds are such a mystery that in 2007 NASA launched a spacecraft to study them.

The Aeronomy of Ice in the Mesosphere satellite (AIM) is equipped with sensors specifically designed to study the swarms of ice crystals that make up NLCs.  Researchers call these swarms “polar mesospheric clouds” (PMCs).

Read all about it on

Climate Change at the Edge of Space

 

 

 

 

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