But of these planets, which is nearest to the sun? Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, ...

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

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

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

Images captured by NASA's Solar Dynamics Observatory have revealed that "coronal loops" give off subtle flashes of ...

In the depth of winter, a sweeping view of our solar system will glow in the night sky. In total, six planets will be visible ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

Pluto-Charon Formation Scenario Mimics Earth-Moon System Jan ... a revised solar composition that potentially reconciles ... Swirling Polar Vortices Likely Exist on the Sun Nov. 11, 2024 ...