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

Astronomers have discovered a brand new type of planet outside our solar system that, even in its infancy, is already bigger ...

Now, researchers think that giant planets outside our Solar System, too, might build their own personal ... the Principal Investigator of the project, said in a statement. It is difficult to study ...

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

A team led by University of Arizona astronomer Laird Close has discovered a growing planet outside our solar system, marking ...

An international team of astronomers has made a landmark discovery by capturing an image of a giant planet forming within a ...

Astronomers have discovered the earliest seeds of rocky planets forming around a baby sun-like star, an unprecedented snapshot of "time zero," when new worlds begin to gel.

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.

Project Hyperion, a contest to design spaceships that could be used for very long journeys, led to the concept of a very ...