When and who discovered jupiter?

Answer 1

In 1610, Galileo Galilei discovered the four largest moons of Jupiter, Io, Europa, Ganymede and Callisto (now known as the Galilean moons) using a telescope, the first observation of moons other than Earth's. This was also the first discovery of a celestial motion not apparently centered on the Earth. It was a major point in favor of Copernicus' heliocentric theory of the motions of the planets; Galileo's outspoken support of the Copernican theory placed him under the threat of the Inquisition.

In 1892, E. E. Barnard observed a fifth satellite of Jupiter with the 36-inch refractor at Lick Observatory in California. The discovery, a testament to his extraordinary eyesight, made him quickly famous. The moon was later named Amalthea.

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Answer 2

Jupiter is visible by the naked eye from Earth. It has been known about since ancient times. The romans are the ones that named it Jupiter though, after the Roman god of Jove, or Jupiter in the Western languages.

Hope this helps.

Answer 3

It has been noticed since ancient times. The Romans are credited with naming the planet.

see: http://en.wikipedia.org/wiki/Jupiter

Answer 4

i know who did but not when Gallio discovered it