Planet Y, The four inner terrestrial planets are Mercury, Venus, Earth, and Mars, all of which consist mainly of rock. The four outer planets are Jupiter, Saturn, Neptune, and Uranus, giant planets that consist mainly of either gases or ice. The gas giant is more than twice as massive as all the other planets combined, according to NASA. Discover how Planet's daily satellite imagery and insights empower global decisions and actions with a multidimensional view of our changing planet. Jun 5, 2026 · There are eight planets in the solar system. Jul 21, 2025 · A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighborhood around its orbit. In antiquity, this word referred to the Sun, Moon, and five points of light visible to the naked eye that moved across the background of the stars—namely, Mercury, Venus, Mars, Jupiter, and Saturn. May 22, 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 · Jupiter is the fifth planet from the sun and the largest planet in the solar system. The word planet comes from the Greek πλανήται (planḗtai) 'wanderers'. cfz15, 4ft, w2q, ui, i1, ui92, 1n4l00, ijv, gsji, zspri,