Discovered using predictions made by Urbain Le Verrier and Johann Galle in September 1846, it was Le Verrier who suggested Neptune should be named after the Roman god of the sea.

A full 165 Earth years ago, German astronomer Johann Galle first spied the icy blue giant giving wide berth to the sun some 2.8 billion miles from the solar system's center.

Back in 1846, astronomer Johann Galle observed Neptune for the first time after its position was predicted by mathematician Urbain Le Verrier.

On the night Johann Galle first spotted Neptune in 1846, it was in the constellation Aquarius close to the planet Saturn as seen here. (Image credit: Starry Night Software) ...

German astronomer Johann Galle discovered the planet September 23, 1846. At the time, the discovery doubled the size of the known solar system.

German astronomer Johann Galle discovered the planet in 1846. So, in honor of Neptune's first anniversary, NASA has released four new images of the planet.

Today (July 12), Neptune completes its first trip around the sun since being discovered nearly 165 Earth years ago — on Sept. 23, 1846, to be exact, by German astronomer Johann Galle.

"German astronomer Johann Galle first observed the planet Neptune on [September 23]. That might not sound too remarkable, but it was the first time an object in the solar system had been ...

The planet Neptune today celebrates its first birthday since it was found by Johann Galle... 165 Earth years ago. On a dark night on September 23, 1846, the German Astronomer spotted the blue ...

Today (July 12), Neptune completes its first trip around the sun since being discovered nearly 165 Earth years ago — on Sept. 23, 1846, to be exact, by German astronomer Johann Galle.

Using Le Verrier’s calculations, German astronomer Johann Galle at the Berlin Observatory located the new planet on Sept. 23, 1846. Neptune's orbit is shaped roughly like an oval, with the ...