Strange Night Shine Clouds Might Mean Global Climate Change

Night shine clouds (also known as polar mesospheric clouds, noctilucent clouds, NLC clouds, or PMC clouds) are commonly observed by astronauts from the International Space Station in the summer months in both the Northern and Southern Hemispheres.

While the observation of these cloud types is not uncommon, some researchers believe an increase in PMC clouds could mean global climate change. PMC clouds were first seen in 1885 two years after the eruption of the Krakatoa volcano which caused atmospheric changes across the globe. However, new research is showing the mesosphere is changing possibly due to global warming according to Space.com. Read more on night shine clouds and the AIM satellite.