24 Jun '12, 10pm

Beautiful: Polar Mesospheric Clouds, Northern Hemisphere

In both the Northern and Southern Hemisphere, during their respective late spring and early summer seasons, polar mesospheric clouds are at the peak of their visibility. Visible from aircraft in flight, the International Space Station (ISS), and from the ground at twilight, the clouds typically appear as delicate, shining threads against the darkness of space—hence their other names of “noctilucent” or “night-shining” clouds. On June 13, 2012, when this image was taken from the ISS as it passed over the Tibetan Plateau, polar mesospheric clouds were also visible to aircraft flying over Canada. In addition to the still image above, the ISS crew took a time-lapse image sequence of polar mesospheric clouds several days earlier (June 5) while passing over western Asia. It is first such sequence of images of the phenomena taken from orbit. Polar mesospheric clouds form between ...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=78346&s...

Tweets

Polar Mesospheric Clouds, Northern Hemisphere: ...

earthobservatory.nasa.gov 24 Jun '12, 10pm

In both the Northern and Southern Hemisphere, during their respective late spring and early summer seasons, polar mesosphe...

Volcanoes, Clouds, and Swirling Winds [image] #NASA

Volcanoes, Clouds, and Swirling Winds [image] #...

earthobservatory.nasa.gov 23 Jun '12, 1pm

Zavodovski Island is but five miles wide, uninhabited by humans, and about as remote a place as you can find on Earth. It ...

mrbrown.com: Image is everything

mrbrown.com: Image is everything

mrbrown.com 28 Jun '12, 4pm

Man, I'd hate to make a newspaper photographer/editor buay song with me. Look at this photo of beleaguered Pastor Kong Hee...

Did the US launch a drone strike on AQIM in nor...

longwarjournal.org 24 Jun '12, 6pm

According to Magharebia , a "mystery airstrike" targeted a convoy of the "Yahya About al Hammam Brigade," a unit of al Qae...