Earth is the third planet from the Sun and the only known world to support life. It has one moon, a magnetic field, and an atmosphere that protects living things from harmful space radiation.
Diameter: 12,742 km
Distance from Sun: 149.6 million km
Length of a year: 365.25 days
Explore the Wonders of Space
Learn about Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune! Discover how they differ in size, composition, atmosphere, and orbit.
Asteroids, comets, dwarf planets, and meteoroids are all part of our amazing universe. They may be small, but they teach us so much about space!
Select a planet and enter the mass of your object to see how much force it would experience!
Black holes are regions of spacetime where gravity is so strong that nothing, not even light, can escape. They remain one of the greatest mysteries of the cosmos.
Galaxies are vast cosmic systems made up of billions of stars, planets, gas, dust, and dark matter, all bound together by gravity. Our galaxy is the Milky Way.
Interstellar travel is the hypothetical journey between stars or planetary systems. While still in the realm of science fiction, it inspires dreams of exploring distant worlds.
This educational simulation and website was created by Gaurav Salian to mentor kids and spark their curiosity about the universe.