Once a realm of imagination and stargazing, the Solar System has now been revealed in stunning clarity through decades of ...

This grandest canyon in the Solar System stretches 4,000 km (2,500 miles) across the Red Planet — nearly covering a quarter of the circumference of that ruddy world.

An astronomer at the University of Hertfordshire has revisited data related to nearby star HD 10180 and discovered that it very likely has nine planets, making it the most populous known solar system.

Our solar system: the Sun; inner planets Mercury, Venus, Earth, and Mars; ... Triple sunset in the star system HD 188753, about 900 trillion miles away. Credit: JPL-Caltech / NASA / R. Hurt.

This star, known as HD 110067, may have even more planets. ... This solar system is unique because all six planets move similar to a perfectly synchronized symphony, scientists said.

The proximity of HD 140283, at 186 light-years from our solar system, made it a target of a highly precise age measurement that put it at 13.2 billion years old ...