Apples and You

 Posted by DrJeff on May 21st, 2009

 Copyright 2009  |  About this blog

 

apple-earth

This post is a Jeffism’ by Dr. Jeff and a Dr. Jeff Speaks Out.


Last time on the blog, I used astronaut John Grunsfeld’s recent Business Trip to the Hubble Space Telescope to show you that the perceived limitless ocean of air under which we live is really not limitless. At an altitude of 62 miles (100 km) above Earth’s surface, you’re effectively at the top of the atmosphere (since 99.99% of it is beneath you.) So let’s really put this in perspective with a Dr. Jeff Jeffism:

 

Earth’s atmosphere compared to Earth is thinner than

the skin of an apple compared to an apple.

 

I truly hope that makes an impression on you. Read it again and let it sink in. Then take a moment and reflect on what you’re thinking.

 

Now … for the rest of the story—


Read the rest of this entry »