(CNN) — Astronomers have observed what they believe to be a never-before-seen companion star orbiting Betelgeuse, a pulsating red supergiant star in the shoulder of the Orion constellation. One of the ...

Scientists have long speculated that Betelgeuse, one of the brightest stars in the night sky, is not alone. Now, thanks to the powerful Gemini North Telescope in Hawaii, astronomers suggest they’ve ...

A technique called interferometry can greatly magnify tiny objects on the sky, and is powerful enough to reveal the surfaces ...

After a long wait, astronomers have finally seen the stellar companion of the famous star Betelgeuse. This companion star orbits Betelgeuse in an incredibly tight orbit, which could explain one of ...

Betelgeuse’s intense glow and vast size—about 700 times the Sun’s radius—have long made it difficult to study anything nearby. Using the NASA-NSF-funded ‘Alopeke instrument on the Gemini North ...

The companion star of Betelgeuse, seen for the first time by the Gemini North Telescope. "This discovery answers the millennia-old question of why this famous star experiences a roughly six-year-long ...