Feb 3, 2026 · Our solar system has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are five officially recognized dwarf planets in our solar system: Ceres, Pluto, …

The eight planets of the Solar System with size to scale (up to down, left to right): Saturn, Jupiter, Uranus, Neptune (outer planets), Earth, Venus, Mars, and Mercury (inner planets)

Feb 5, 2026 · Planet, broadly, any relatively large natural body that revolves in an orbit around the Sun or around some other star and that is not radiating energy from internal nuclear fusion reactions. …

May 2, 2025 · Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home.

May 3, 2025 · The planets, from searing Mercury to frigid Neptune, each offer a unique chapter in the story of our solar system’s formation, evolution, and mystery. As we journey from one world to the …

An overview of the history, mythology and current scientific knowledge of the planets, moons and other objects in our solar system.

Feb 9, 2026 · Astronomy.com is for anyone who wants to learn more about astronomy and space, including planets, galaxies, asteroids, and NASA.

May 21, 2024 · Scientists believe planets begin to form when a dense cloud of dust and gas, called a nebula, spins around a newly formed star. Gradually, gravity causes the bits of matter in the nebula …

Jul 11, 2024 · Discover the eight planets in our solar system, their unique characteristics, classifications, and their order from the Sun.

Feb 9, 2026 · Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don’t have hard surfaces. Jupiter and Saturn are the gas giants in …