Astronomers traced a mysterious 'scar' of ionized gas around the solar system to two stars that had a close flyby with our ...

While these free events do indeed happen each month, the gathering that's set to sparkle Dec. 20 feels a bit special: It's ...

I don't know anyone who isn't stunned by the brilliance of the winter night sky. At this time of year, the stars seem to ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes ...