No sudden, sharp boundary marks the passage of day into night [
http://antwrp.gsfc.
] in this gorgeous view [
http://eol.jsc.nasa
photo.pl?mission=ISS 002&roll=E&frame=737 7 ] of ocean and clouds over our fair planet Earth [
http://earthobserva
]. Instead, the shadow line or terminator [
http://sci.gallaude
] is diffuse and shows the gradual transition to darkness we experience as twilight. With the Sun illuminating the scene from the right, the cloud tops reflect gently reddened sunlight filtered [
http://webexhibits.
] through the dusty troposphere, the lowest layer of the planet's nurturing atmosphere [
http://liftoff.msfc
atmosphere.html ]. A clear high altitude layer, visible along the dayside's upper edge, scatters blue [
http://webexhibits.
] sunlight and fades into the blackness of space. This picture actually [
http://antwrp.gsfc.
] is a single digital photograph taken in June of 2001 from the International Space Station orbiting at [
http://antwrp.gsfc.
] an altitude of 211 nautical miles [
http://www.gwydir.d
].
Explanation
No sudden, sharp boundary marks the passage of day into night [
http://antwrp.gsfc.
] in this gorgeous view [
http://eol.jsc.nasa
photo.pl?mission=ISS 002&roll=E&frame=737 7 ] of ocean and clouds over our fair planet Earth [
http://earthobserva
]. Instead, the shadow line or terminator [
http://sci.gallaude
] is diffuse and shows the gradual transition to darkness we experience as twilight. With the Sun illuminating the scene from the right, the cloud tops reflect gently reddened sunlight filtered [
http://webexhibits.
] through the dusty troposphere, the lowest layer of the planet's nurturing atmosphere [
http://liftoff.msfc
atmosphere.html ]. A clear high altitude layer, visible along the dayside's upper edge, scatters blue [
http://webexhibits.
] sunlight and fades into the blackness of space. This picture actually [
http://antwrp.gsfc.
] is a single digital photograph taken in June of 2001 from the International Space Station orbiting at [
http://antwrp.gsfc.
] an altitude of 211 nautical miles [
http://www.gwydir.d
].
Explanation