Sunrise Over Kilimanjaro
Credit & Copyright: Clayton Hogen-Chin (U. Minnesota)
Explanation: Is the Roof of Africa on fire? A group hiking at 6 am near the top of Mt. Kilimanjaro watched the rising sun peak above the clouds and the horizon light up red. Don't worry -- in this case the highest volcano in Africa is not even erupting. The spectacular sunrise colors are caused by light scattering off the atmosphere and small cloud particles. If all of the scattered light that makes the sky blue were added back into the scene, the sunrise would appear Sun-colored and not so red. A similar light scattering effect involving small airborne dust particles causes sunsets on Mars to be red and has been used to determine the sizes of particles in the rings of Saturn. During this trek in 2000 November, a group of about 30 reached the Kilomanjaro summit after a six-day climb.
Wow, that's a great picture. I climbed Kilimanjaro in 1995 but didn't see anything quite like that. I was really stoked to get to the summit because I had read these stories about how you could see the curvature of the earth from up there. Unfortunately, the morning we summited, it was completely f**cking socked in with fog and the wind was blowing suuper hard. There were lots of little ice crystals in the air so it was like being sandblasted. I got to the summit, snapped a picture of the little sign at the top, and turned around. I think we spent about 3 minutes at the top.