The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

The Sun is an incandescent but benevolent dictator. For billions of years, it's kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it on ...

Pluto was reclassified as a dwarf planet in 2006. Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be hidden far into the solar system ...

Astronomers have discovered the raw ingredients of planets orbiting two infant stars, offering a glimpse into how new worlds ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Most planet-forming disks have warps that can lead to planets on inclined orbits, which could explain where the tilt of Earth's orbit came from.

Astronomers have found new evidence that a mysterious ninth planet may be hiding at the edge of the solar system - rewriting what we know about the cosmos again. An international team from Taiwan, ...

The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are added to the count on a rolling basis by scientists from around the world, ...

NASA aims to study rocky planets similar to Earth and analyse their atmospheres for biosignatures. The James Webb Space ...