The Star Betelgeuse Dimmed A Bit In 2019. Astronomers Think They Know Why Sciencealert
The red supergiant star, which is about 530 light-years from Earth, is among the brightest in the night sky. The star forms the shoulder of the constellation Orion (The Hunter). It’s also geriatric: Betelgeuse is nearing the end of its stellar life and will eventually explode in a supernova visible from Earth, though it may take another 100,000 years, according to a 2021 study. In late 2019, Betelgeuse’s light began to dim....