In 'Don't Look Up,' a pair of scientists struggle to convince America (and the President) that a comet is on course to destroy the Earth. It's not so farfetched.

The real science behind the mysterious 'Devil Comet' that's larger than Mount Everest and erupting for reasons scientists don't fully understand ...

For as long as I remember there have been frequent forecasts of bright comets coming to our skies. Often, many predictions go way over the top, like “Comet of the Century will Light up the Sky.” ...

Comet Tsuchinshan-Atlas shows great promise, though. Calling it the comet of the century is a bit much since, for one thing, there are more than 75 years left of the present century.