earth,planets,sol,galaxy,space we are very small
posted by jwray
2 years 5 months 3 weeks ago • 2042 viewstags: earth, planets, sol, galaxy, space
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playlists with this video Space, creation, and everything inbetween by pyrex
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We Are Very Small Related Videos
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http://video.google.com/videoplay?docid=-188856689734099300&q=sirius+sun&total=27&start=0&num=10&so=0&type=search&plindex=7
http://www.videosift.com/video/Size-Comparison-of-Various-Celestial-Bodies
Also a nice one here:
http://www.videosift.com/video/The-grand-scheme-of-things
Here's a really good one if anyone wants to post it:
http://www.youtube.com/watch?v=_WEL117xXpw
And don't forget the "Powers of 10" videos here:
http://www.videosift.com/video/IBM-Powers-Of-Ten-amazing-9-minute-science-video
And here:
http://www.videosift.com/video/Spectrum-Natural-ends-of-time-and-space
And, of course, here:
http://www.videosift.com/video/Powers-of-ten-Simpsons-version
And jwray, there's an invite for you at the "Clouds and Beyond" Collective.
Sc
Yes, but actually smaller planets would be more conducive to having very large life forms on land, because of the weaker gravitational pull. As you make larger and larger versions of a structure, its mass grows faster than its strength. If s is the scale than mass is O(s^3) and strength is very roughly O(s^2). This is one of the reasons why all sufficiently large planets are roughly spherical. This is why an ant can lift 20 times its own body weight but no known large creature can. This is why you can't build an arbitrarily long bridge without supports in the middle.
http://www.videosift.com/video/How-the-view-of-the-universe-from-earth-evolves-with-time