News tagged with observable universe

How can space travel faster than the speed of light?

Cosmologists are intellectual time travelers. Looking back over billions of years, these scientists are able to trace the evolution of our Universe in astonishing detail. 13.8 billion years ago, the Big Bang ...

Feb 23, 2015
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Hubble image: A cross-section of the universe

An image of a galaxy cluster taken by the NASA/ESA Hubble Space Telescope gives a remarkable cross-section of the Universe, showing objects at different distances and stages in cosmic history. They range ...

Apr 17, 2014
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CSIRO telescope marks 25 years of success

One of the world's most successful astronomy observatories, CSIRO's Australia Telescope Compact Array near Narrabri, New South Wales (NSW), turns 25 years of age on 2 September.

Aug 26, 2013
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How big are galaxies?

I'm going to refrain from the initial response that comes to mind… actually, no I won't—they're really, really, really big!!!!

Apr 03, 2013
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Galaxies the way they were

( —Galaxies today come very roughly in two types: reddish, elliptically shaped collections of older stars, and bluer, spiral shaped objects dominated by young stars. The conventional wisdom is ...

Apr 03, 2013
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