The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday morning (July 21).
Betelgeuse is a star that's never out of the news for long. It made headlines in recent years when it dimmed considerably, and since it's a red supergiant, people wondered if it was about to explode as a supernova. That expectation died down when scientists showed that the dimming is because of dust, but now Betelgeuse is in the news again, this time because of a newly-discovered companion star.

