Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

Astronomers say they have evidence that there may be a hidden planet in our Solar System. Named 'Planet Y', the Earth-sized ...

That's where the new—and unusual—solar system comes in. Citizen scientists identified the five-planet system in early April, just two weeks after Exoplanet Explorers launched.

Astronomer and Pluto mission leader S. Alan Stern explores how the field has transformed during his decades-long career.

Dr. Raluca Rufu and Dr. Robin Canup of SwRI's Solar System Science and Exploration Division in Boulder, Colorado, used advanced simulations that show surviving early-formed planets match multiple ...

Carbon dioxide has been detected on a planet outside our solar system for the first time. The gas has been observed directly by the James Webb Space Telescope on four exoplanets, all belonging to ...

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago.

There have been questions about a mysterious ninth planet in our solar system for nearly a decade. Pluto was unseated as number nine in 2006. Now, a group of international researchers say they may ...

Astronomers have discovered six planets orbiting a bright, nearby star in perfect synchrony like a grand cosmic orchestra.

A model of a solar system first and foremost with a small projector built in, the Science Can Solar System Planetary Projector is a great educational tool for kids.

Kepler data has identified a star with a seven-planet system structured similarly to the sun’s clutch of planets.

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.