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How Big is Space?

When you’re out at night with an astronomer, you’ll hear...

Ever since Galileo first turned a telescope to the sky...

A series of three lectures delivered in March 1995: The...

A lecture on what comes after the end of a...

The death of a star in a supernova explosion is...

Have you ever wondered why the constellation patterns in the...

Ever since Jesus was born, people have been pondering on...

Our Galaxy – one of billions in the Universe –...

Why do astronomers do astronomy? It's often assumed that astronomy...

A series of three lectures on genetic engineering by Professor...