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Science

How cold is the solar system?

2 Answers
ANSWER

Outer space is on average 2.7 Kelvin, -270.45 Celsius, or -454.81 Fahrenheit

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It can be as cold as -290 degrees Fahrenheit (-179 degrees Celsius) on Mercury at night. Temperatures for the gas and ice giants (Jupiter, Saturn, Uranus, and Neptune) are taken from a level in the atmosphere equal in pressure to sea level on Earth.

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