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Hard to believe these haven't been found yet with all the various detection equipment of today ... the ancients had their eyes and later small telescopes and found planets and moons ... Galileo observed some of Jupiter's moons in 1610. Two More Planets in Our Solar System, Say Astronomers http://news.yahoo.com/two-more-planets-solar-system-astronomers-134043845.html 1610: Galileo Galilei Observes the Moons of Jupiter https://cosmology.carnegiescience.edu/timeline/1610 Galileo’s telescope was only an inch-and-a-half in diameter. Although he did not invent the telescope, and may not even have been the first to use it to observe the sky, Galileo’s interpretation of what he observed with his tiny telescope changed people’s view of the universe in two fundamental ways. Galileo saw countless stars in the milky-white cloud in the night sky, and realized that the “dome of the fixed stars” is not a dome at all, but has depth. Galileo observed Jupiter’s Moons, providing a powerful argument that Earth may not be the center of the Universe, but instead circle the Sun. Galileo also measured the phases of Venus. ... I just spotted this, this number has really gone up from 30 - 40 years ago. Jupiter has more than 60 known moons. ...
