Astronomers may have finally solved one of the weirdest mysteries of our night sky: why Betelgeuse, a massive star in the ...

Betelgeuse is one of the weirdest stars in the sky, but astronomers can now explain one of its most enduring mysteries.

Betelgeuse is one of the brightest stars in the night sky and a familiar landmark in the constellation Orion. It has also ...

NASA’s Hubble data shows a wake of dense gas around Betelgeuse, offering the clearest proof yet of a long-suspected companion ...

Betelgeuse’s long-standing mystery has been cracked: a hidden companion star is literally reshaping the giant from the inside out.

Using new observations from NASA's Hubble Space Telescope and ground-based observatories, astronomers have tracked the ...

Using new observations from NASA’s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence ...

It will be a spectacular event, but calculating when it will happen is a tricky business. Every now and then, in recent observations, Betelgeuse has grown dimmer or brightened, prompting speculation ...

Learn how Betelgeuse's atmosphere has been altered by its companion star, which has left behind a trail of expanding gas.

For decades, astronomers have tracked changes in its brightness and surface features in hopes of figuring out why the star ...

At the 247th meeting of the American Astronomical Society, this one held in Phoenix on January 4-8, Andrea Dupree of the Center for Astrophysics|Harvard & Smithsonian presented a talk entitled, ...

Astronomers have confirmed that Betelgeuse has a close companion star, identified through a repeating wake of gas in its atmosphere, offering new insight into how massive stars change and lose materia ...