(CNN) — German astronomer Johannes Kepler made sketches of sunspots in 1607 from his observations of the sun’s surface — and centuries later, the pioneering drawings are helping scientists solve a ...

In 1607, Johannes Kepler projected an image of the Sun onto a piece of paper and spotted a dark smudge. He thought he was ...

Scientists have discovered a distant solar system very much like our own, in which the orbits of all known planets lie in nearly the same plane and are aligned with the star's rotation. In recent ...