Far beyond the eight familiar planets in our solar system, countless bizarre and extreme worlds await discovery — and some ...

Almost everything you could want to know about the closest planet to the Sun, Mercury. Real HD photos and videos taken by the MESSENGER probe. We discuss the orbit, climate, geographical features ...

A stunning cosmic getaway is in store for residents of the United States on Friday evening as seven planets will align in a spectacular display — dubbed a planet parade — that can be seen ...

The confirmed discovery of exoplanets revolutionized our understanding of the universe. Among the thousands of confirmed exoplanets, HD 20794 d in particular, recently attracted attention for a unique ...

Remarkable views of Venus are available this month. The first two weeks of March provide a great opportunity to sight four bright naked-eye planets in the early evening sky. Low toward the west ...

Seven planets are aligning in the night sky this week, creating a brief chance to see a "planetary parade." Worldwide, the best day to see the alignment is today, Feb. 28. Mercury, Venus, Mars ...

Earth has a nearly circular orbit, but some planets outside our solar system, called exoplanets, have very elliptical orbits.

Get closer to our solar companions with the best telescopes for seeing planets, just in time for February's fantastic planetary parade. Want to focus your stargazing on our cosmic neighbors, from ...

The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in ...

Carbon dioxide has been detected on a planet outside our solar system for the first time. The gas has been observed directly by the James Webb Space Telescope on four exoplanets, all belonging to ...