Astronomers are on the verge of answering one of our most profound questions: are we alone in the universe? The ability to detect life in remote solar systems i

He has discovered more planets than anyone in history. In this inspiring true story, winner of the American Institute of Physics Award, Geoff Marcy's love of sp

Provides historical information on astronomy, the discovery of the planets, and the people who have made such discoveries.

Ever since the serendipitous discovery of planet Uranus in 1871, astronomers have been hunting for new worlds in the outer regions of our solar system. This exc

In the vastness of space, countless planets exist. Scientists are actively studying as many of them as they can. How many could support life as Earth does? And