Did the universe have a beginning? What, if anything, came before the Big Bang? Receive emails about upcoming NOVA programs and related content, as well as featured reporting about current events ...

Earlier this week, Audrey Mithani and Alexander Vilenkin at Tufts University in Massachusetts argued that the mathematical properties of eternity prove that the universe must have had a beginning.

Cosmologist Alexander Vilenkin believes the Big Bang wasn't a one-off event, but merely one of a series of big bangs creating an endless number of bubble universes. It is cosmology’s most fundamental ...

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Tufts University is understandably a little ambivalent about its Antigravity Rock. On the plus side, it’s not an unattractive boulder, as boulders go; it has a catchy name and bears a handsome ...

My hope is that cosmic strings will be discovered. Strings are relics of the hot, high-energy epoch in the early universe. They are thin tubes of energy sweeping through space at close to the speed of ...

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