Jupiter
Jupiter is the fifth planet from the Sun and the largest in our Solar System. It is a gas giant, primarily composed of hydrogen and helium, with a mass nearly 2.5 times that of all the other planets combined. Jupiter's diameter is 11 times larger than Earth's, and it completes an orbit around the Sun every 11.86 years. The planet matters enormously to our Solar System's history: it formed first among the planets, just one million years after the Sun, and its massive gravity fundamentally shaped how other planets formed, including Earth. Today, Jupiter has at least 115 moons and is surrounded by a faint ring system. Astronomers use "Jupiter mass" as a standard unit to describe giant planets around distant stars.
Sources
- en.wikipedia.org: “Jupiter is the fifth planet from the Sun, and the largest in the Solar System.”
- en.wikipedia.org: “It is a gas giant with a mass nearly 2.5 times that of all the other planets in the Solar System combined”
- en.wikipedia.org: “The diameter of Jupiter is 11 times that of Earth”
- en.wikipedia.org: “with an orbital period of 11.86 years”
- en.wikipedia.org: “Jupiter is believed to be the oldest planet in the Solar System, having formed just one million years after the Sun”
- en.wikipedia.org: “Jupiter's migration from the inner Solar System eventually allowed the inner planets—including Earth—to form from the rubble.”
- en.wikipedia.org: “At least 115 moons orbit the planet”
- en.wikipedia.org: “Jupiter is surrounded by a faint system of planetary rings.”
- en.wikipedia.org: “A "Jupiter mass" (MJ or MJup) is used as a unit to describe masses of other objects, particularly extrasolar planets and brown dwarfs.”