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Line 1: − [[Image:Odyssey.jpg|thumb|right|This Greek illustration shows a man (possibly Homer of Troy) looking through a primitive telescope. The Greeks were notable seafarers.]]+ − − +
Reverted edits by Massoch (Talk) to last version by LiamG
The '''telescope''' is an [[optical]] instrument made with lenses and [[mirror]]s which shows magnified views of distant objects. Its [[invention]] is usually credited to [[Hans Lippershey]]. However, [[Galileo|Galileo Galilei]] later made significant improvements to the telescope. He was the first person to use telescope to look at objects in the [[sky]] and to write about what he discovered.
The '''telescope''' is an [[optical]] instrument made with lenses and [[mirror]]s which shows magnified views of distant objects. Its [[invention]] is usually credited to [[Hans Lippershey]]. However, [[Galileo|Galileo Galilei]] later made significant improvements to the telescope. He was the first person to use telescope to look at objects in the [[sky]] and to write about what he discovered.
Galileo discovered the [[moon]]s that revolve around the [[planet]] [[Jupiter]]. These can seen by anyone with a pair of modern [[binocular]]s; they usually look like three or four [[star]]s that are close to Jupiter and all lined up in a straight line. This discovery was important because at the time [[philosopher]]s and [[theologian]]s believed that everything in the [[universe]] revolved around the [[Earth]]. They believed that the geocentric design reflected the will of [[God]]. Galileo's discoveries and his insistence on publishing them put him into conflict with the [[Catholic Church]] and even led to his being put under house arrest.
Galileo allegedly discovered the [[moon]]s that revolve around the [[planet]] [[Jupiter]]. These can seen by anyone with a pair of modern [[binocular]]s; they usually look like three or four [[star]]s that are close to Jupiter and all lined up in a straight line. This discovery was important because at the time [[philosopher]]s and [[theologian]]s believed that everything in the [[universe]] revolved around the [[Earth]]. They believed that the [[geocentric]] design reflected the will of [[God]]. Galileo's discoveries and his insistence on publishing them put him into conflict with the [[Catholic Church]] and even led to his being put under [[house]] [[arrest]].
The simplest telescopes (e.g., the kind Galileo worked with) are built with two lenses in a tube.
The simplest telescopes (e.g., the kind Galileo worked with) are built with two lenses in a tube.
During the twentieth century, a small number of [[astronomer]]s built huge telescopes. Some of the most famous in the United States are:
During the twentieth century, [[astronomer]]s built huge telescopes. Some of the most famous in the United States are:
*the [[Lick Observatory]] on Mount Hamilton near San Jose, [[California]];
*the [[Lick Observatory]] on Mount Hamilton near San Jose, [[California]];