The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

Of the nearly 6,000 confirmed exoplanets in the Milky Way, Tylos has one of the most-studied atmospheres out there. It's what we call a hot Jupiter – a world comparable in size to our own gas giants, ...