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Astronomers Discover Evidence of Companion Star Near Betelgeuse

KVIA••CNN Newsource
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Recent observations have unveiled a significant discovery regarding Betelgeuse, the prominent red supergiant star located 650 light-years away. Astronomers have identified a dense trail of gas in Betelgeuse’s atmosphere, likely created by a hidden companion star nicknamed 'Siwarha.' This companion, which orbits Betelgeuse every six years, may be responsible for the star's periodic changes in brightness. The findings, accepted for publication in the Astrophysical Journal, build on previous research suggesting Siwarha's influence on Betelgeuse's luminosity. Understanding this relationship could provide insights into the behavior of other distant giant stars.

Key Details: • Betelgeuse is about 650 light-years from Earth and is 15 times the mass of the sun. • The companion star, Siwarha, completes an orbit around Betelgeuse every six years. • The new study has been accepted for publication in the Astrophysical Journal.

research astronomy space betelgeuse stars

People & Organizations

Andrea DupreeMorgan MacLeodSteve HowellHarvard-Smithsonian Center for AstrophysicsNASA Ames Research Center

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