Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

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.

Using a cutting-edge adaptive optics system developed at the University of Arizona's Steward Observatory, a growing planet ...

Independent previous research has also proposed a similar Planet Y to explain the warp or other features in the TNO ...

Scientists have developed a new and improved method to better understand "steam world" exoplanets, a move that could refocus ...

Penn State astronomers are using data from NASA’s James Webb Space Telescope, combined with theoretical models, to ...

The latest research on asteroid Bennu has revealed its heterogeneous origin and a parent world with flowing water, adding to ...