An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Exoplanets have captured the imagination of the public and scientists alike and as the search continues for more, researchers ...

Stargazers will be treated to a rare treat this month when six planets will "align" in the night sky for an eye-catching ...

These situations allows scientists to investigate the usually hidden interiors of terrestrial worlds. Two teams of astronomers, including the observed planet's discoverers, now intend to join up ...

A planet-sized visitor possibly visited the solar system billions of years ago and permanently changed the cosmic neighbourhood by warping the orbital path of four outer planets of the system, a ...