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Voyager 2 spacecraft makes its closest approach to Neptune, the last planet in the Solar System at the time, due to Pluto being within Neptune's orbit from 1979 to 1999.
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Voyager 2
NASA space probe launched in 1977
Voyager 2 is a space probe launched by NASA on August 20, 1977, as a part of the Voyager program. It was launched on a trajectory towards the gas giants and enabled further encounters with the ice giants. The only spacecraft to have visited either of the ice giant planets, it…Source: Wikipedia (CC BY-SA)
Neptune
Eighth planet from the Sun
Neptune is the eighth and farthest known planet orbiting the Sun. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times the mass of Earth. Compared to Uranus, its neighbouring ice giant,…Source: Wikipedia (CC BY-SA)
Solar System
The Sun and objects orbiting it
The Solar System consists of the Sun and the objects that orbit it. The name comes from Sōl, the Latin name for the Sun. It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, creating the Sun and a protoplanetary disc from which the orbiting…Source: Wikipedia (CC BY-SA)
August 25
Day of the year
August 25 is the 237th day of the year in the Gregorian calendar; 128 days remain until the end of the year.Source: Wikipedia (CC BY-SA)