An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...
WASP-127b's diameter is about 30% larger than Jupiter, our solar system's largest planet. But its mass is only about 16% that ...
A planet parade like the one beginning tonight is quite uncommon, occurring once every 10-20 years. Here are the planets you ...
Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But ...
The concept of Planet X, or Planet Nine, has captivated astronomers for decades. This hypothetical planet, theorized to be ...
The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun ...
The James Webb Space Telescope has provided groundbreaking insights into a new type of exoplanet, fundamentally different ...