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Mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. #Jupiter is classified as a gas giant along with Saturn, Uranus and Neptune. Together, these four planets are sometimes referred to as the Jovian or outer planets.

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Uranus a beautiful planet indeed--7th planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune...both are different chemical composition than the larger gas giants Jupiter and Saturn. For this reason, astronomers sometimes place them in a separate category called "ice giants"...

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Cold Neptunes an exoplanet sweet spot? As astronomers explore distance solar systems what can they expect to find? A new study suggests likely Neptune-mass worlds in solar systems icy outer realms.

Neptune-mass Outer Planets Likely Common Around Other Stars

artists sketch of purple, ringed planet, asteroid

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As astronomers explore distance solar systems, what can they expect to find? A new study suggests likely Neptune-mass worlds in solar systems' icy outer realms.

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Oh neptune

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As astronomers explore distance solar systems, what can they expect to find? A new study suggests likely Neptune-mass worlds in solar systems' icy outer realms.

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'Planet Nine' May Exist: New Evidence for Another World in Our Solar System. Credit: Karl Tate / © Space.com. Source: Caltech

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