Android — 16 June 2012

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Have you ever wondered how we know the distance between Earth and Proxima Centauri? What about the furthest reaches of the universe — how do we know they’re the furthest? The Royal Observatory in Greenwich, London currently has an exhibition on the subject and has uploaded a video that gives a simple explanation of how astronomers deal with a very complex problem.

Measuring the Universe: from the transit of Venus to the edge of the cosmos will run until September 2nd 2012, excluding July 7th – August 5th. Admission is free.

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