At the center is the sun, a yellow dwarf star that contains 99.8% of the solar system's mass. Everything else — from the eight major planets to dwarf planets, comets, asteroids, and icy objects ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The composite image ... all of the solar system's eight planets to align as closely, it would take 396 billion years, ...

2025 — The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away that has ...

With a sun more than 4.5 billion years old, our solar system ... planets b and c are the only such planets well known to ...

But do other planets have seasonal patterns, too? Indeed, other planets, dwarf planets and moons in our solar system do have seasonal ... when Earth is on one side of the sun, the Northern ...

Astronomers have captured the sharpest, most detailed images yet of young solar systems where planets are just beginning to take shape. Exquisite snapshots released on Monday (April 28 ...

For years, astronomers have been searching for a ninth planet in our solar ... degrees from the plane of the solar system, meaning it would actually orbit the Sun in the opposite direction than ...