Energy Star, the Environmental Protection Agency program identifiable by the small blue logo with a star on many American appliances, may be terminated. The program began in 1992 as a way for ...

Once every 10,000 years or so, the center of a galaxy lights up as its supermassive black hole rips apart a passing star. This “tidal disruption event” happens in a literal flash, as the central black ...

Astronomers have begun measuring of the most distant star ever detected, thanks to the powerful eyes of the James Webb Space Telescope (JWST). That star, known as Earendel, was discovered last year by ...

I love simple questions that wind up having complicated—or at least not straightforward—answers. Astronomers twist themselves into knots, for example, trying to define what a planet is, even though it ...

Some massive stars may go out with a fizzle, not a bang. A star that winked out of view could be a “failed supernova,” a stellar explosion that petered out instead of fully detonating, a new study ...

The Star of Bethlehem may have been a planetary conjunction. A comet or supernova are less likely explanations. Multiple planetary alignments around 7-3 BC could have been interpreted as significant.