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SpaceSurprise 5/5Difficulty 3/5Reviewed on September 15, 2026

The interstellar comet 3I/Atlas releases more than five tonnes of water vapour per second.

Why it is true

Comet 3I/Atlas, the third known interstellar object to cross the Solar System, was observed releasing water vapour at a rate much higher than most comets. This discovery helps scientists understand the composition of distant planetary systems.

Source: NASA

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