All solar system planets circle our sun with slightly tilted orbits — and a new study shows even distant planetary systems in quiet neighborhoods have orbital tilts, too.

Understanding that even planets in pristine solar systems have some orbital tilt puts Earth’s solar system into a larger perspective, researchers say.

A massive interstellar object passing through our solar system during its formative years likely altered the orbits of planets into trajectories observed today, a new study says.

Astronomers recently made an important discovery when they found a rare "in-sync" solar system with six planets all moving in one big grand harmony.

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

The solar system orbits around the center of the Milky Way — our galaxy — but even within the frame of the solar system, the sun is not exactly static because of the gravitational interaction ...

Scientists have been trying to find a hypothetical Planet 9 that may exist outside our known solar system based on the unusual orbits of certain dwarf planets. But those orbits might not require a ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun as the orbit of Mars.

In a breakthrough that could reshape how we protect Earth from space weather, scientists successfully forecasted a powerful solar storm more than 15 hours before it reached the planet. The findings, ...

The solar system's main asteroid belt may have taken its shape when three gas giant planets were flung into more distant orbits, scattering the remote, icy objects that were lurking at the solar ...

Astronomers have discovered a rare solar system in the Milky Way with six planets orbiting in perfect rhythm like a cosmic orchestra.