Simon marius

Astronomer Simon Marius.

Simon Marius (January 10, 1573 – December 26, 1624) was a German astronomer. He was born in Gunzenhausen although he spent most of his life in the city of Ansbach.

In 1614 Marius published a work entitled Mundus Iovialis in which he described the system of Jupiter and its moons that had been described four years earlier by the Italian Galileo Galilei in his work Sidereus Nuncius . Marius claimed to have discovered Jupiter's four Galilean satellites a few days before Galileo. This led to a dispute between the two in which Galileo accused Marius of not only being a liar but of having copied his own work in the Mundus Iovialis which he denounced as outright plagiarism. Today it is considered possible that Marius would have discovered Jupiter's satellites independently of Galileo but possibly a few days later. Regardless of these priority disputes, it is noteworthy that the four satellites today receive their names from those originally proposed by Marius at the behest of Johannes Kepler: Io, Europa, Ganymede, and Callisto.

Simon Marius also claimed to have discovered the Andromeda galaxy, a discovery attributed to Arab astronomers in the Middle Ages and known in the time of Marius.

Eponymy

• The lunar crater Marius carries this name in his memory.
• The asteroid (7984) Marius also commemorates its name.
• Just like that, Marius Regio, a region of the Jovian moon Ganimedes, has received its name.

Website

• Portal Marius Mathematic - doctor - astronomer