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Cassini–Huygens makes its closest flyby of the Saturn moon Phoebe.
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Cassini–Huygens
Mission to Saturn (1997–2017)
Cassini–Huygens, commonly called Cassini, was a space-research mission by NASA, the European Space Agency (ESA), and the Italian Space Agency (ASI) to send a space probe to study the planet Saturn and its system, including its rings and natural satellites. The Flagship-class…Source: Wikipedia (CC BY-SA)
Saturn
Sixth planet from the Sun
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 of about 9 times that of Earth. It has an eighth the average density of Earth, but is over 95 times more massive. Even though Saturn is…Source: Wikipedia (CC BY-SA)
Natural satellite
Astronomical body that orbits a planet
A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body. Natural satellites are colloquially referred to as moons, a derivation from the Moon of Earth.Source: Wikipedia (CC BY-SA)
Phoebe (moon)
Moon of Saturn
Phoebe is the most massive irregular satellite of Saturn with a mean diameter of 213 km (132 mi). It was discovered by William Henry Pickering on 18 March 1899 from photographic plates that had been taken by DeLisle Stewart starting on 16 August 1898 at the Boyden Station of the…Source: Wikipedia (CC BY-SA)