The Largest Star Ever Discovered in the Universe | Science For Sleep
Автор: Kozmik
Загружено: 2026-02-08
Просмотров: 402
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The largest star ever discovered could swallow seven quadrillion Earths inside its volume. Stephenson two dash eighteen sits twenty thousand light years away in the constellation Scutum. If you placed it at the center of our solar system, its surface would stretch past the orbit of Saturn. The star burns so dim that despite its enormous size, you cannot see it without a telescope. Its radius measures two thousand one hundred fifty eight times larger than our sun.
For decades, astronomers believed stars had an upper limit. They thought fusion physics prevented anything larger than fifteen hundred solar radii from forming. Stephenson two dash eighteen breaks that assumption. The star exists in a rare phase called a red hypergiant, a category containing fewer than ten known examples in our entire galaxy. These giants live fast and die young, burning through their fuel in just a few million years compared to the sun's ten billion year lifespan.
The discovery reshapes our understanding of stellar evolution. Stars can grow far more massive than physics seemed to allow. When Stephenson two dash eighteen finally explodes, it will detonate as a hypernova, an event so violent it briefly outshines entire galaxies. That explosion is coming soon in cosmic terms. The star has already begun shedding its outer layers, a sign that its core is collapsing.
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