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

NASA has been monitoring a never-before-seen planet in its solar system, which is eight times the size of Earth.

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

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

NASA's James Webb Space Telescope has been used to shed new light on the exoplanet, GJ 1214 b, which is more than eight times ...

15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System ... a large fraction of the size ... Dec. 20, 2024 ...

Most of the information we have about planets beyond our solar system (exoplanets ... This technique can give clues about the planet's size (by looking at how much starlight is blocked) and ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

However, this year a powerful new telescope is coming online that could prove once and for all that there really is a ninth planet in our Solar System. The same year that Pluto was ignominiously ...

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia. Just how this cosmic waltz would look with a 'super-Earth' in place of the ...

The solar system consists of 8 planets, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has its own unique characteristics, such as size, composition ...