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By Paul M. Sutter on January 15, 2019 in

Why are matter and antimatter symmetric? What happened in the early universe to make matter win? Do we have any clue as to why? What do puppies have to do with it? I discuss these questions and more in today’s Ask a Spaceman!

By Astronomy Cast on March 11, 2013 in

Podcaster: Fraser Cain and Dr Pamela Gay