A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four massive but extremely low-density worlds orbiting the star appear to be ...

Studying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while smaller planets tend to have more circular orbits. This split coincides with several other ...

The Earth-size planet HD 137010 b has a ‘50% chance of residing in the habitable zone’ of its sun-like star, scientists say ...

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

A unique characteristic of the candidate planet HD 137010b is its ice-cold temperature.

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of ...

"There really is something very different about how these giant planets form versus how small planets like Earth form." When you purchase through links on our site, we may earn an affiliate commission ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Planet Nine, a hypothetical, undiscovered planet in our solar system. New research now suggests the ...

In theory, a planet may be able to orbit a binary star system in a figure of eight, but it may not be particularly stable, explain our readers ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course. When ...