A seemingly regular, Sun-like star began acting really weird, flickering haphazardly as its light faded in and out. The cause of the star’s strange behavior may have been a cosmic catastrophe that’s ...

Astronomers witnessed planets colliding 11,000 light-years away, an event that could shed light on the collision that created Earth's moon.

Kate Courtney, Matt Beers, Alessandra Keller and Sam Gaze among stacked start lists, but which pairs will come out on top?

Sky This Week is brought to you in part by Celestron. Friday, March 13Look north this evening a couple hours after sunset and you'll easily spot the large shape of the Big Dipper as it sits ...