A galaxy far, far away and long. long ago. UDFy-38135539 - about the most distant observed object, where UDF stands for (Hubble) Ultra-Deep Field. Credit: HST - NASA/ESA.
The universe is a big place – and getting bigger all the time – so at a large scale all unbound structures are all moving away from each other. So when we look out at distant objects, we need to remind ourselves that not only are we seeing them as they appeared in the past, when the light that hits our eyes first left them, but also that they are no longer in that location where they appear to be.(...)
Read the rest of Astronomy Without A Telescope – Our Inferred Universe (641 words)
© Steve Nerlich for Universe Today, 2011. | Permalink | No comment | Add to del.icio.us
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Full story at http://www.universetoday.com/84428/astronomy-without-a-telescope-our-inferred-universe/
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