WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter" — in 2016, but have continued to investigate this ...

Mercury takes only 88 Earth days to orbit the sun.

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

The discovery of an extraordinary multi-planet system has demonstrated that so-called "hot Jupiter" planets may ... many times that of the Jupiter in our solar system. They also orbit incredibly ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

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

Astronomers have made a groundbreaking discovery in the WASP-132 system, finding two new planets that defy previous ...

The new exoplanet, Enaiposha, also known as GJ 1214 b has never been seen before and is now officially being called a "Super-Venus." ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests. The ...