editor@science360.gov
08.22.12 News | Today's News | Past Issues
08.22.12 News
Subscribe
Get Science360 News daily:
Print this page
Picture of the Day

Noctilucent Clouds

These mystifying clouds are called polar mesospheric clouds, or PMCs, when they are viewed from space and referred to as "night-shining" clouds or noctilucent clouds, when viewed by observers on Earth. The clouds glow blue-white and are best seen right after sunset. They form in the upper layer of the Earth’s atmosphere called the mesosphere during the summer and can be seen from the high latitudes on Earth.
Image credit: NASA/Veres Viktor