The smallest planet in our solar system is also the closest to the sun. That means on Mercury, one year is just 88 days long! Discover more facts about the small but mighty Mercury.
The second brightest object in the sky after the moon is Venus. It's also the only planet named after a woman. Learn more about bright, beautiful Venus, named after the Roman goddess of love and beauty.
The only planet to support life, Earth has a lot going for it. Think you know everything there is to know about our home planet? Think again. Discover more about the blue planet we call home.
Mars is famous for its red colour, but the fourth planet from the sun has more than that going for it. Discover more interesting facts and secrets about the famous "red planet".
