Originally called 'Heracleion' by the Greeks but named 'Thonis' by the ancient Egyptians, the existence of the mythical city was confirmed to be true when in 2000, Dr. Frank Goddio (an underwater archaeologist) made one of the most important discoveries of the 21st century.
long with his team from the European Institute for Underwater Archaeology, he unearthed the lost city, revealing a treasure trove of artifacts and ruins some 30ft under the Mediterranean Sea in Aboukir Bay, Alexandria. For the past 13 years they have been painstakingly excavating the area, lifting up pieces of history, long since forgotten, from the bottom of the ocean.
Neptune was supposedly discovered in 1846 by Johann Gottfried Galle using calculations by Urbain Le Verrier and John Couch Adams, making it a joint British-French-German discovery.
But these astronomers were not the first to observe Neptune. That honor goes to the famous Italian astronomer Galileo Galilei.
While sketching the moons of Jupiter with his newly discovered telescope, Galileo twice drew Neptune, which happened to be in conjunction with Jupiter in early 1613. It's usually said that Galileo mistook Neptune for a star because of its slow movement.