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

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 ...

The gas around the red giant star Betelgeuse revealed the effects of a newly found companion star, Siwarha, likely circling ...

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

Betelgeuse is one of the best-known stars in the night sky, as well as the easiest to find. New examinations of this behemoth star suggest it is both smaller — and closer — than astronomers believed.

Using new observations from the Hubble Space Telescope and observatories on Earth, scientists have confirmed the existence of ...

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

Its famous dimming event from a few years ago turns out to be evidence of a recent explosion rather than an imminent supernova. Eric Mack has been a CNET contributor since 2011. Eric and his family ...

The dimming of Betelgeuse seen at the end of 2019 and the start of 2020 explained — the red giant star “sneezed.” Betelgeuse dimmed in the final few months of 2019, perplexing both professional and ...