The Solar System is a fascinating place, with each planet orbiting the Sun at its own unique distance. But how far apart are ...

Astronomers have recently uncovered a remarkable planetary system around the faint orange star WASP-132, featuring two ...

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

The newfound exoplanet, called Kepler-139f, is a gigantic world roughly twice the mass of Neptune and 35 times the mass of ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

A planet is defined by three qualities: It orbits the sun, it's mostly round, and it's massive enough for its gravity to have ...

Though our solar system and the movement of its planets appear relatively sedate, there are many things that could upset the ...

NASA's Kepler planet-hunting probe has spotted a system where two giant planets are locked in constantly changing orbits — with a super-Earth potentially pinned down in the crossfire ...

However, if you used smaller planets that are one-tenth the size of Earth (roughly the same mass as Mars), you could fit in 121 orbits, each containing 89 planets, which gives a total of 10,769 ...

Planets Found With Crisscross Orbits—A First. A "super Jupiter" and its sibling have unusual, crisscross orbits—the first time anyone has seen such a configuration, scientists say.

All three known planets in this strange system could easily fit within the orbit of Mercury. The innermost planet is HD 3167b, a super-Earth about five times as massive and 1.7 times as wide as Earth.

Strange giant planets known as hot Jupiters, which orbit close to their suns, got kicked onto their peculiar paths by nearby planets and stars, a new study finds. After analyzing the orbits of ...