Q:

How hot is Betelgeuse compared to the sun?

A:

Quick Answer

Betelgeuse is 4,000 degrees Fahrenheit cooler than the sun, measuring an effective temperature of 6,000 degrees Fahrenheit compared to the sun's 10,000 degrees Fahrenheit. Despite its lower temperature, Betelgeuse's diameter of 600 million miles is around 700 times the diameter of the sun.

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How hot is Betelgeuse compared to the sun?
Credit: By ESO/Digitized Sky Survey 2 (http://www.eso.org/public/images/eso0927e/) Wikimedia Commons CC-BY-2.0

Full Answer

Betelgeuse is a red supergiant in the M classification, meaning that it appears light orange and red to human eye. The star emits 7,500 times as much energy as the sun. As a red supergiant, Betelgeuse is likely much closer to the end of its life than the sun, a G-type white dwarf. Betelgeuse is 520 light-years from Earth.


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