Quote:
|
Originally Posted by Jim Colyer
Jupiter has 60 moons. Io, Europa, Ganymede and Callisto are the largest, named for Jupiter's lovers. They were first seen by Galileo, who invented the telescope in 1610. Io is interesting because it has the only volcanos in in the solar system beyond Earth.
|
Galileo was not the inventor of the Telescope. A lot of people have been told he was. But he only improved on the Telescope.
Hans Lippershey in 1608 delivers the 1st Telescope to the masses.
http://www.abc.net.au/science/k2/moments/s1401029.htm
Quote:
Around 1000 AD, the brilliant Arabian astronomer and mathematician, Ibn Alhazen wrote about concave lenses in his ground-breaking mathematical book on vision. The 13th Century Oxford scholar and Franciscan monk, Roger Bacon wrote about combining lenses to see at a distance, as did the 16th Century Italian spectacle maker, Giovanbaptista Della Porta (1538-1615), and a host of others.
But the first documented actual working telescope was delivered by Hans Lippershey, a spectacle-maker from Middelburg, in Zeeland (south of Holland) to Prince Maurice of Nassau in The Hague. This happened in the last week of September, 1608. But the time was obviously ripe for the telescope to be invented, because within three weeks, two other spectacle makers turned up in The Hague to try to sell what they thought was their unique new invention of the telescope.
The word spread very rapidly across Europe about this new invention, and by May 1609, while Galileo was professor of mathematics at the University of Padua, he had heard of this new device. He was very smart, and very quickly worked out how to make his own telescope. He learnt how to grind lenses, and all the other necessary skills, and soon made an 8-power telescope (that would make the image 8 times larger) and a 20-power telescope.
|
Mars has volcanoes that are dorment. maybe you ment active volcanoes. Venus has the most volcanoes over 1600 Major with estimates of over 10,000.
http://volcano.und.edu/vwdocs/planet...nus/intro.html
