How High Can You Fly?

Here are a couple more vacation photos...



i-112461f883dae9138758f52b466f8e9e-iss-500px.jpg





i-2c4ef6b30189c7deb6cca36e0cdf0408-clouds-500px.jpg



Notice that the bottom photo may seem to have been taken from a greater
altitude, although that is not the case.  The top one is not
really a
vacation photo; it's from the
href="http://antwrp.gsfc.nasa.gov/apod/ap060724.html">Astronomy
Picture of the Day
site.  (Credit:
href="http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts121/121_crew.html">STS-121
Crew
,
href="http://www.nasa.gov/mission_pages/station/expeditions/expedition13/index.html">Expedition
13 Crew
, NASA)



The top one was taken from a Space Shuttle; the bottom one was taken
from a Boeing 737-500.  The use of a wide-angle lens, and the
placement of the horizon close to the top of the picture, causes the
horizon to look as though it is has greater curvature; this causes the
appearance of a higher altitude.  



The top photo shows a greater color gradient in the sky, which is a
clue that it is the one that actually was taken from a greater
altitude.


More like this

Have you ever wondered how well-pressurized airlines keep the cabin of the average commercial flight? I have.
Anyone who has tried to capture a fly or other insect can't help but marvel at their aeronautic prowess. Their reflexes are lightning-fast, and they seem to avoid obstacles before they are even perceptible.
400-500 years ago in the midst of the Great Dying somewhere the indigenous inhabitants of the New World suffered mortality rates on the order of 90-95%.
From L.A.Times (you'll have to click - I am purposefully citing out of context for humorous purposes):

One day i want to photograph the earth from space. I need to remember that we're just dots on the planet :)