10th Day of October

1846 – Triton, the largest moon of the planet Neptune, is discovered

Triton is the largest natural satellite of the planet Neptune, and the first Neptunian moon to be discovered.

The discovery was made on October 10th, 1846, by English astronomer William Lassell.

1846 – Triton, the largest moon of the planet Neptune, is discovered

It is the only large moon in the Solar System with a retrograde orbit, an orbit in the direction opposite to its planet’s rotation.

During its 1989 flyby of Triton, Voyager 2 found surface temperatures of 38 K (−235 °C) and also discovered, Triton has a surface of mostly frozen nitrogen, a mostly water-ice crust, an icy mantle and a substantial core of rock and metal.

Extra Note: Because of its retrograde orbit and composition similar to Pluto, Triton is thought to have been a dwarf planet captured from the Kuiper belt.

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https://en.wikipedia.org/wiki/Triton_(moon)

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NO: 2674

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