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 ...

When you think of threats from outer space, you might picture deadly solar flares, planet destroying asteroids, or even a hostile alien invasion. But scientists warn that the biggest danger could be ...

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.

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

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

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

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

Yet, despite using the JWST's sensitive Near-Infrared Spectrometer, or NIRSpec, astronomers led by Piaulet-Ghorayeb found no ...