Showing posts with label NLCs. Show all posts
Showing posts with label NLCs. Show all posts
Monday, July 07, 2014
Mysterious Night-Shining Clouds Glow Above Northern Ireland
Electric-blue noctilucent clouds glimmered in the sky just before dawn when this amazing image was captured.
Astrophotographer John McConnell took the photo on June 20, 2014 from Maghaberry, Northern Ireland.
Noctilucent clouds or NLCs are blue-white clouds that are so bright they can be seen in the twilight sky. They typically form about 50 to 53 miles (80 and 85 kilometers) above ground in the atmosphere, at altitudes high enough to reflect light even after the sun has slipped below the horizon.
"This was the best display since the 2009 season . . ..
Sunday, July 03, 2011
Night-Shining Clouds (NLCs) Sighted over the United States
NLCs INVADE THE USA
On July 1st and 2nd, a bank of rippling electric-blue noctilucent clouds spilled across the Canadian border into the lower United States. In doing so, the clouds made their farthest excursion of the year away from the Arctic, their usual environment. "These were the most brilliant NLCs I have ever witnessed!" reports Steven Rosenow . . . .
