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...is the point of no return? German physicist, Karl Schwarzchild calculated the event horizon of black holes. And it can tell us more about the eventual fate of all the galaxies...Find out more about The Open University's Natural Sciences courses. Transcript Read Stephen Serjeant on the speed of light Discover how you can study physics and astronomy with The Open University...

...how Einstein was right all along about the expanding Universe. We never should have doubted him...Find out more about The Open University's Natural Sciences courses. Transcript Read Stephen Serjeant on what it means to equate the curvature of the Universe with the amount of stuff in the Universe Discover how you can study physics and astronomy with The Open University...

...courses and qualifications. Nylon is a well-known synthetic polymer (derived from the Greek words ’poly’ meaning ’many’ and ’meros’ meaning ’parts’). It was invented by Wallace Carothers, and first brought to the public’s attention in October 1938. [Nylon thread [Image: Pop Top Lady under CC-BY-ND licence]] Nylon thread [Image: Pop Top Lady under...