175 Years Ago, Planet Neptune Found

Neptune is the eighth planet from the sun.

REPUBLIKA.CO.ID, BERLIN – On September 23, 1846, German astronomer Johann Gottfried Galle find planets Neptune at the Berlin Observatory. Neptune is the eighth planet from the sun.

As reported by the page History, Thursday (23/9), Neptune was postulated by French astronomer Urbain-Jean-Joseph Le Verrier. He calculated the approximate location of the planets by studying the disturbances caused by gravity in the motion of Uranus.

On September 23, 1846, Le Verrier informed Galle of his findings. Later that same night Galle and his assistant Heinrich Louis d’Arrest identified Neptune at their observatory in Berlin.

The planet Neptune is classified because it observes the movement relative to the star for 24 hours. The blue gas giant has a diameter four times the diameter of Earth, and was later named after the Roman god of the sea.

Neptune has eight known moons, of which Triton is the largest, and a ring system containing three bright rings and two dim rings. The planet completes an orbit of the sun once every 165 years. In 1989, the US planetary spacecraft Voyager 2 was the first human spacecraft to visit Neptune.

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