Explore the hypothetical existence of parallel planetary systems.

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the discovery of a planet about twice the size of Earth orbiting its star ...

Venus is the hottest planet in the solar system due to its thick carbon dioxide atmosphere, trapping heat as part of a ...

Scientists may have found a new Tatooine-like planet outside the solar system that orbits two failed stars. NEW YORK (AP) — A ...

Learn about the solar system from a pair of real space museum curators in sci-fi game Elite Dangerous, as Abbie MacKinnon and ...

The James Webb Space Telescope spotted possible signatures for life in an exoplanet's atmosphere. Still, researchers caution ...

"A planet orbiting not just a binary, but a binary brown dwarf, as well as being on a polar orbit, is rather incredible and ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why Pluto isn't a planet.