Uploaded September 2025 | Updated September 2026, 2 weeks ago

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*This clip was originally broadcast in 2008.* In these alligator-infested backwoods, Brian Cox visits an observatory where the final piece in the puzzle of Einstein's universe is being put to the test.

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Taken from 'Horizon: What on Earth Is Wrong with Gravity?' (2008)
Physicist Brian Cox embarks on an adventure to discover why even the world's most famous scientists have not been able to unravel the darkest secrets of the Universe. On his journey to the truth, Brian literally gets to grips with gravity - from firing a laser beam at the moon and bending time to operate his SatNav to trying to capture gravity itself. Brian's gravitational wild goose chase leads him to the greatest unknown in science - quantum gravity. Using the most powerful experiments ever created by man, Brian's journey might lead him to much more than an understanding of gravity.

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