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The Sky at Night - Light Echoes

Sir Patrick Moore dons a gold nose and becomes Tycho Brahe, the famous Danish astronomer, who witnessed a supernova in 1572.

Over 436 years later, astronomers picked up a light echo from this supernova. Dr Chris Lintott and the team explain just what a light echo is.

4 minutes

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The Sky at NightLight Echoes

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