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What is Stephenson 2-18? 7 things to know about this super-giant star

Stephenson 2-18, an immense red supergiant discovered in 1987, beckons from 18,000 light-years away, promising insights into stellar dynamics and a future supernova

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Massive Size

Stephenson 2-18 is a red supergiant star located in the constellation Scutum. It is considered one of the largest stars known

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Luminosity

The star is also extremely luminous, with a high intrinsic brightness. Its luminosity is believed to be over 200,000 times that of the Sun

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Distance from Earth

Stephenson 2-18 is located at a considerable distance from Earth. It is generally considered to be around 18,000 light-years away

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Discovery

The star was discovered by American astronomer Albert F. J. Moffat in 1987

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Evolutionary Stage

Stephenson 2-18 is in advanced stage of its evolution. It is a red supergiant, which means it has exhausted the hydrogen fuel in its core and has expanded to a large size

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Potential Supernova

Given its advanced evolutionary stage, Stephenson 2-18 is expected to undergo a supernova explosion at some point in the future. When this will happen is uncertain

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Importance in Astrophysics

Studying massive stars like Stephenson 2-18 provides valuable insights into the life cycle of stars and the processes that govern their evolution

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