If you ask most people how the universe began, they might say “the Big Bang” - but it’s hard to be satisfied with that answer and to resist the temptation to ask “but what happened before that?”

Well, that is precisely the question that Will Kinney, Professor in the Department of Physics at the University at Buffalo, strives to answer in his new book - 'An Infinity of Worlds: Cosmic Inflation and the Beginning of the Universe'.

He joined Jonathan to discuss.

Dr.Ruth Freeman from SFI & Dr. Lara Dungan also joined Jonathan to run through some of the week's biggest science stories for Newsround.

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