NASA History Office(@NASAhistory):Whoomp there it is! After two astronomers, Urbain Le Verrier and John Couch Adams, independently calculated its predicted location, Johann Gottfried Galle found the planet Neptune 180 years ago on Sept 23, 1846. In 1989 when Voyager 2 became the first—and so far only—spacecraft to visit Neptune, it took thousands of images of Neptune, its rings, and its moons, including this one.

NASA History Office

@NASAhistory

This is the NASA History Office's official X account. We're happy that you share our passion for aerospace history.

Joined June 2010

165 Following 1.2M Followers

NASA History Office@NASAhistory

2026.09.23 15:00

Whoomp there it is! After two astronomers, Urbain Le Verrier and John Couch Adams, independently calculated its predicted location, Johann Gottfried Galle found the planet Neptune 180 years ago on Sept 23, 1846. In 1989 when Voyager 2 became the first—and so far only—spacecraft to visit Neptune, it took thousands of images of Neptune, its rings, and its moons, including this one.