For centuries, Betelgeuse — one of the brightest stars and the closest red supergiant to Earth — appeared to shine alone in the night sky, but an elusive stellar partner hiding in plain sight has ...

That said, it can be confusing to know which Gemini features are free and which ones you have to pay for. Some features, like ...

Astronomers have confirmed the existence of a companion star in a tight orbit around Betelgeuse, resolving a long-standing ...