Astronomers at the Center for Astrophysics | Harvard & Smithsonian have uncovered direct evidence that the red supergiant ...

What makes the star remarkable is its location. Siwarha appears to orbit so close that it never leaves Betelgeuse’s ...

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

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

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

The bizarre dimming patterns of Betelgeuse, an enormous red supergiant star in the constellation Orion, have bewildered ...

Astronomers have uncovered the long-hidden cause behind Betelgeuse’s strange behavior: a small companion star carving a visible wake through the giant’s vast atmosphere. Using nearly eight years of ...

Ignoring interference from the occasional dusty sneeze, Betelgeuse's light seems to vary according to two distinct cycles.

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

PHOENIX — Like a motorboat doing doughnuts in a lake, Betelgeuse’s companion star leaves a wake in the giant star’s atmosphere. Signs of the smaller star’s trail around the red supergiant are the best ...

Something strange happened that made scientists question the influence of companion star Siwarha on Betelgeuse's surrounding ...

Five years ago (wow, has it really been five?!), buzz over a certain star in Orion stirred the astronomy community.