Is the Roof of Africa [
http://www.mos.org/…] on fire? A group hiking at 6 am near the top of Mt. Kilimanjaro [
http://volcano.und.…] 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 [
http://www.cia.gov/…] is not even erupting. The spectacular sunrise [
http://antwrp.gsfc.…] colors are caused by light scattering off the atmosphere and small cloud particles. If all of the scattered light that makes the sky blue [
http://math.ucr.edu…] 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 [
http://antwrp.gsfc.…] to be red and has been used to determine the sizes of particles in the rings of Saturn [
http://antwrp.gsfc.…]. During this trek in 2000 November, a group of about 30 reached the Kilomanjaro [
http://antwrp.gsfc.…] summit [
http://antwrp.gsfc.…] after a six-day climb.
Explanation
Is the Roof of Africa [
http://www.mos.org/…] on fire? A group hiking at 6 am near the top of Mt. Kilimanjaro [
http://volcano.und.…] 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 [
http://www.cia.gov/…] is not even erupting. The spectacular sunrise [
http://antwrp.gsfc.…] colors are caused by light scattering off the atmosphere and small cloud particles. If all of the scattered light that makes the sky blue [
http://math.ucr.edu…] 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 [
http://antwrp.gsfc.…] to be red and has been used to determine the sizes of particles in the rings of Saturn [
http://antwrp.gsfc.…]. During this trek in 2000 November, a group of about 30 reached the Kilomanjaro [
http://antwrp.gsfc.…] summit [
http://antwrp.gsfc.…] after a six-day climb.
Explanation
