Gresham provides outstanding educational talks and videos for the public free of charge. There are over 3000 videos available on the Gresham website. Your support will help us to encourage people's love of learning for many years to come.
Space today is terrifyingly silent. But it wasn’t always thus: the early universe was filled with a hot plasma in which sound waves could travel. The cosmos was quivering with the aftershocks of the Big Bang.
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