Scale

ConversesAstronomy & Astrophysics

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Scale

1WholeHouseLibrary
des. 11, 2010, 3:28pm

A friend sent this link to me: http://uploads.ungrounded.net/525000/525347_scale_of_universe_ng.swf

It's your basic Powers of Ten, but with more examples and details. Enjoy!

2Noisy
des. 11, 2010, 3:47pm

Lovely. Hard to control the slider, though.

3Barton
des. 20, 2010, 12:21am

Very impressive but is there life as we know it?

4rybie2
Editat: març 4, 2011, 9:14am

#2 - Instead of a mouse or touch pad, try using your left and right arrow buttons.

5proximity1
ag. 1, 2020, 6:44am


Here's a good, clear exposition in layman's terms of the problematic aspects of measurement and its limits when it comes to astrophysics on vast extra-galactic scales.

For example, from the article, our universe is merely the observable part. It's estimated to be about 13.8bn light-years across. But because the universe is expanding and has been all during that time, the expansion has to be estimated and added to that space-time. The result adds another 31.2bn light-years--more than twice the base figure.

Big space | Our planet is a tiny porthole, looking over a cosmic sea. Can we learn what lies beyond our own horizons of perception? | by Katie Mack | Aeon |
31 July 2020


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"This Essay is based on Katie Mack’s forthcoming book, The End of Everything: (Astrophysically Speaking) , publishing on 4 August 2020 by Scribner."