It's your Solar System where you are the Sun, and the surrounding planets denote your best friends on Snapchat. For instance, the first planet is Mercury, which represents your best friend with ...

This process, , is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

Only eight planets call our solar system home. Or there might still be nine if some astronomers are correct about an as-yet undiscovered large body out past Neptune.

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

Between February 25 and February 28, all seven planets in our solar system will be visible in the night sky. (Credit: WSET) You'll need a telescope for some of them, but you should be able to find ...

The Sun is an incandescent but benevolent dictator. For billions of years, it's kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it ...

Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar system. “We’ve captured ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

The planets of our solar system formed together with their mother star, and the Earth did likewise, emerging about 4.5 billion years ago around the sun. This happened in the habitable zone, which ...

Astronomers have discovered the earliest seeds of rocky planets forming around a baby sun-like star. They reported Wednesday that it's an unprecedented snapshot of “time zero” when new worlds ...