Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.

Our solar system is made up of the sun and all the amazing objects that travel around it. Learn more about the planets, asteroids, and comets in our solar system. 3:55 ...

The Hubble Space Telescope time-lapse captured footage of Jupiter, Saturn, Uranus and Neptune. Credit: SCIENCE: NASA, ESA, ...

This will be bad news for the inner planets of the solar system — including Earth. As the sun becomes a type of star called a red giant, its outer shell will expand to the orbit of Mars ...

Astronomers have revealed new research showing that millions of new solar system objects are likely to be detected by a brand-new facility, which is expected to come online later this year.

Find one of the Best telescopes for kids for ... long focal length and high-resolution optical system of the Sky-Watcher Skymax-180 PRO makes it ideal for exploring the planets of our solar system.

Welcome to the new Sun competition! This time, the winner will be the heaviest planet! SolarBalls offers space animation filled with fun, entertaining segments that also help you learn about the solar ...