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Fraser
2009-Mar-20, 03:30 PM
This week we wonder if the Universe is going to collapse and then expand again, how satellites can have such different velocities, and the size of the observable Universe. If you've got a question for the Astronomy Cast team, please email it in to info@astronomycast.com and we'll try to tackle it for a future show. Please [...]

More... (http://www.universetoday.com/2009/03/20/podcast-questions-show-multiple-big-bangs-satellite-collisions-and-the-size-of-the-universe/)