From Earth spinning on its axis and orbiting the Sun to it precessing like a top, lots of factors affect which stars you can ...

Polaris, also known as the 'Pole Star' or 'North Star', is arguably the most famous stellar body to hang in the western hemisphere's night sky. For centuries it has served as a vital waypoint for ...

This illustration shows how Earth’s spin axis (blue) is tilted from perpendicular, causing it to precess and trace out a circle over about 26,000 years. The brightest star nearest the North Celestial ...

The North Star seems to be glued to the same spot in the northern sky every night, while all the other stars wheel around it. It’s been the ultimate celestial landmark for centuries, but what’s ...

Regular readers of my column certainly know how to use the Big Dipper to find the North Star (aka Polaris). Some folks believe Polaris is important because it’s the brightest star in the heavens, and ...

The equatorial coordinate system projects Earth's latitude and longitude onto the celestial sphere, using declination (angular distance from the celestial equator, measured in degrees) and right ...