The physics behind this is complex, but in a nutshell, small changes in the orbit of Neptune—the major planet most affected by a star passing by—propagate inward.

European brown bears Mish and Lucy, both 5, escaped their enclosure at the Wildwood Devon conservation park in Britain and promptly helped themselves to lots of snacks.

Two European brown bears escaped their enclosure to snack on a week's worth of honey. Wildwood Devon, the park where the bears reside, activated security measures and coaxed them back into their ...

The HBO series is peppered with references to real-life personages and historical events—but it lacks the anything-goes energy of the era in which it’s set.