Betelgeuse Revealed as Binary Star System After Centuries of Study

For centuries, Betelgeuse has stood as one of the most studied stars in the human sky — a red supergiant in Orion's shoulder, observed, measured, and presumed to be alone. New telescope imaging has now revealed a companion star orbiting the giant, quietly present through all those years of scrutiny, invisible only because our instruments were not yet equal to the task of seeing it. The discovery does not merely correct a fact; it reminds us that knowledge is always a portrait of our tools as much as of the world itself.