Buy on Amazon Keep Exploring NOVA's "The Planets: Mars" Homepage Related to This Episode Finding Life Beyond Earth We are on the verge of answering one of the greatest questions in history: Are we ...

Outer Planets Planets beyond Mars, sometimes called the Jovian planets or gas giants due to their composition and size. These include Jupiter, Saturn, Uranus, and Neptune.

Are we alone—and if not, what might the inhabitants of far-flung worlds look like? It’s a golden age for planet hunters: NASA's Kepler mission has identified more than 3,500 potential planets ...

Scientists have been looking for extra-solar planets for decades, but only recently, with better equipment and improved techniques, have they finally unveiled new and unusual planets. Since 1995 ...