Mizar, a star in the Big Dipper's handle, has a tiny companion. This star, Alcor, was known to the ancients. The pair was ...

In a stunning reminder of our place in the vastness of space, a remarkable image taken by NASA’s Cassini spacecraft shows ...

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

No more excuses! Use this comprehensive Father's Day gift guide to find the perfect gifts for the stepdads, bonus dads, and ...