စနေဂြိုဟ်: တည်းဖြတ်မှု မူကွဲများ

[[File:Saturn from Cassini Orbiter (2004-10-06).jpg|thumbnail|right|250px|[[ကစ္စနီဂြိုဟ်တု]] မှ စနေဂြိုလ် မြင်ကွင်း]]

 

Saturn is best known for its clearly visible [[planetary rings]] which makes it the most visually remarkable object in the solar system. The rings were first discovered by [[Galileo Galilei]] in [[1610]], using his [[telescope]]. He did not identify them as rings though, describing them as "ears". He stated that Saturn was actually three separate planets that almost touch one another. In 1612, when the rings were facing edge on with the Earth, the rings disappeared, then reappeared again in 1613, further confusing Galileo.<ref name="history_of_the_rings">Baalke, Ron. [http://www2.jpl.nasa.gov/saturn/back.html Historical Background of Saturn's Rings]. ''Saturn Ring Plane Crossings of 1995-1996''. Jet Propulsion Laboratory. Retrieved on [[May 23]], [[2007]].</ref> In 1655, [[Christiaan Huygens]] was the first person who suggested that Saturn was surrounded by rings. He observed Saturn using a much more powerful telescope than Galilei's. He quoted that "It [Saturn] is surrounded by a thin, flat, ring, nowhere touching, inclined to the ecliptic."<ref name="history_of_the_rings"/> In 1675, [[Giovanni Domenico Cassini]] discovered that the planet's rings were in fact made of smaller ringlets with gaps. The largest ring gap was later named the Cassini Division. In 1859, [[James Clerk Maxwell]] showed that the rings cannot be solid, but are made of small particles, each orbiting Saturn on their own, otherwise, it would become unstable or break apart.<ref>[http://www-history.mcs.st-andrews.ac.uk/~history/Extras/Maxwell_Saturn.html James Clerk Maxwell on the nature of Saturn's rings]. Retrieved on [[July 6]], [[2007]].</ref> [[James Keeler]] studied the rings using a [[spectrometer|spectroscope]] in 1895 which proved Maxwell's theory to be correct.

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