Galileo Galilei Discovered Jupiter’s Moons

Galileo Galilei, Italian astronomer discovered Jupiter’s satellites by telescope then published in the book Siderius nuncius (The Starry Messenger), in 1610. Continue reading

Simon Marius

Simon Marius (Latinized from German Simon Mayr; January 20, 1573 – January 5, 1625) was a German astronomer. He was born in Gunzenhausen, near Nuremberg, but he spent most of his life in the city of Ansbach. He is most noted for making the first observations of the four largest moons of Jupiter, before Galileo himself, and his publication of his discovery led to charges of plagiarism. He is also known for the first European observation of the Andromeda Galaxy.

More info at: Simon Marius – Wikipedia

Additional Articles associated with this person’s firsts:

Name(s):
      Simon Marius
Birth:
      January 20, 1573, Gunzenhausen, Germany
Death:
      January 5, 1625, Ansbach, Germany
Discovered:
      Europa, Ganymede
Known for:
      Jupiter, Andromeda Galaxy


Additional Information:

Close-up photographs of Jupiter

The U.S.-built planetary probe Pioneer 10 satellite was launched on March 2, 1972, from Cape Canaveral, FL, USA. Then on December 3, 1973, as Pioneer 10 passed Jupiter, it took Close-up photographs of of the giant planet. Continue reading