Learn about Earth's formation, location, speed, composition, the existence of life, and more. Discover how Earth is unique among the planets and why it is the only place where life can exist.

Learn about the Earth's formation, rotation, orbit, surface, moon, and more. Discover some surprising facts about the Earth's size, shape, density, water, and atmosphere.

Learn 10 fascinating facts about the Earth, our wonderful world, from its age and size to its shape and atmosphere. Find out how the Earth orbits the sun, spins on its axis, and supports life.

Learn about Earth, the third planet from the Sun and the only place in the universe known to harbour life. Explore its structure, composition, temperature, mass, and more with Britannica.

Learn about Earth's features, layers, atmosphere, climate, and history from this comprehensive article. Discover how Earth is unique among the planets and how we study it from space.

While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface. Just slightly larger than nearby Venus, Earth is the biggest of the four planets closest to the Sun, all of which are made of rock and metal.

Learn how NASA studies Earth's oceans, land, ice, and atmosphere, and how human activities affect the climate. Find recent news, videos, images, and data on topics such as sea level rise, greenhouse gases, wildfires, and more.

Learn about Earth's features, history, and uniqueness among the Solar System planets. Explore images of Earth by spacecraft, and discover how we can protect our planet from asteroid impacts.

Learn about Earth's basic characteristics, such as diameter, orbit, rotation, surface, atmosphere, temperature, and escape velocity. Find out more facts about the planets in our solar system in the linked articles.