The North Star has guided navigators for centuries, but scientists have only now noticed that it has a strange spotted surface. The star has been discovered to be covered in light and dark blotches ...

Earth wobbles on its axis like a spinning top, a motion called precession. This wobble takes about 26,000 years to complete one full circle. Different stars have served as the North Star throughout ...

We Earthlings see the sun every day of our lives—but gaining a truly new view of our star is a rare and precious thing. So count your lucky stars: for the first time in history, scientists have ...