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Betelgeuse

Photo from Wikimedia Commons

Betelgeuse

A red supergiant on the brink of a supernova/Stars

Betelgeuse is a red supergiant star in the constellation Orion, one of the largest and most luminous stars visible to the naked eye. It is roughly 700 light-years from Earth and could explode as a supernova within the next 100,000 years. Its diameter is large enough that if placed at the centre of our solar system, its surface would extend past the orbit of Jupiter.

Measurements

Estimated diameter1.2 trillion m
3.1 billionSupertankers
11.7 sextillionHydrogen atoms

Roughly 887 solar diameters

Mass21.9 nonillion kg
3.7 sextillionGreat Pyramids of Giza
3 septillionEiffel Tower masses
219 sextillionAircraft carriers

About 11 solar masses

Luminosity75 nonillion W
100 septillionFormula 1 engines
125 octillionBlenders

About 196,000 times solar luminosity

Effective surface temperature3,500 K
2.33Pottery kiln firings
10.6Sahara Desert peaks
9.38Boiling water
Distance from Earth6.2 quintillion m
1.1 quintillionParking space lengths
13.7 quadrillionPetronas Tower heights

About 653 light-years

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