Christmas Day will be quite warm across the U.S. only days after the winter solstice. Here is an explanation of why winter ...

For more than a century, astronomers have known that some “new stars” flaring into view are not births at all but violent ...

A rare cosmic alignment has revealed three supermassive black holes blasting radio jets at the same time inside a tangled ...

P erihelion – or the Earth's closest approach to our host star – will take place on January 3, 2026. At this point, our ...