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The solar system is the collection of planets, moons, asteroids, comets, and other objects that orbit the Sun. It consists of the Sun, eight planets, dwarf planets, and other objects such as asteroids, comets, and meteoroids. The planets in the solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The four inner planets, Mercury, Venus, Earth, and Mars, are also known as the terrestrial planets because they
Mercury
Mercury is the smallest and innermost planet in the Solar System. It is a terrestrial planet, meaning it is a rocky body like Earth. Mercury has no moons and is the closest planet to the Sun, orbiting it every 87.97 days. It has a thin atmosphere composed mostly of oxygen and sodium.
Venus is the second planet from the Sun in the Solar System. It is the second brightest object in the night sky after the Moon, and is sometimes referred to as the "Morning Star" or "Evening Star" because of its visibility at dawn and dusk. Venus is the second-largest terrestrial planet, after Earth. It is sometimes referred to as the Earth's "sister planet" due to their similar size, mass, proximity to the Sun, and bulk composition.
Earth is the only known planet to have life.its best place for living
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, after Mercury. It is often referred to as the "Red Planet" because the iron oxide prevalent on its surface gives it a reddish appearance.
Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass one-thousandth that of the Sun, but two-and-a-half times that of all the other planets in the Solar System combined. Jupiter is composed primarily of hydrogen with a quarter of its mass being helium, though helium only comprises about a tenth of the number of molecules. It may also have a rocky core of heavier elements,
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius about nine times that of Earth. It has only one-eighth the average density of Earth, but with its larger volume Saturn is over 95 times more massive. Saturn is named after the Roman god of agriculture; its astronomical symbol (♄) represents the god's sickle.
Uranus is the seventh planet from the Sun in the Solar System. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune, and both have bulk chemical compositions which differ from that of the larger gas giants Jupiter and Saturn
Neptune is the eighth and farthest known planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Among the giant planets in the Solar System, Neptune is the most dense. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth and slightly larger than Neptune.
Pluto is no longer considered a planet. In 2006, the International Astronomical Union (IAU) reclassified Pluto as a dwarf planet |