After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Our solar system ...

A joint Hubble and James Webb Space Telescope (JWST) project to learn more about the dusty disk around the bright star Vega ...

A new study suggests that the planet’s icy interior and liquid ocean could be insulated with a three-to-six-mile-thick layer ...

This hypothetical Neptune-sized planet would circle our Sun on a highly elongated path, far beyond Pluto. It could have a ...

Our solar system consists of Sun and celestial bodies bound to it by gravity, including planets, moons, asteroids, and comets ...

Fastest Known Planetary System May Have Been Pushed by Our Galaxy’s Supermassive Black Hole ...

MIT researchers analyzed precious samples from the asteroid Ryugu, delivered to Earth by Japan’s Hayabusa2 mission. They looked for clues of an ancient magnetic field.

5️⃣ ‘Saddest thing’: When crews in Rome built a tiny temporary pool in front of the famous Trevi Fountain for tourists to ...

It would depend on a lot, say our readers, from how big it was to the route it took - but it could have significant ...

Nearly 47 years ago, two NASA spacecrafts were bound for one of the grandest journeys across our solar system to fly by and ...