Changes

== Problems for uniformitarian theories ==

== Problems for uniformitarian theories ==

The origin of Saturn's rings remains a mystery<ref name=Arnett/><ref name=Hamilton/>, and a troublesome one. The rings are not stable and hence could not have persisted for the whole of the assumed [[deep time]] age of the solar system.<ref name=Arnett/> [[Uniformitarianism|uniformitarians]] admit that Saturn's rings could not be older than about 100 million years.<ref name=Arnett/> They therefore propose that Saturn's rings formed from the disintegration of one or more moons, perhaps following a collision with a [[comet]].<ref name=Arnett/><ref name=Hamilton/> However, Wing-Huan Ip at the Max Planck Institute calculated that a comet-moon collision would not be sufficiently likely to occur in less time than 30 billion years. This is more than twice the age of the universe calculated from the [[Hubble constant]].<ref name=Harris>Harris, David M. "[http://www.answersingenesis.org/creation/v12/i4/saturn.asp How Old are Saturn's Rings]?" ''Creation'', 12(4):40–41. September 1990. Accessed May 18, 2008.</ref>

The origin of Saturn's rings remains a mystery<ref name=Arnett/><ref name=Hamilton/>, and a troublesome one. The rings are not stable and hence could not have persisted for the whole of the assumed [[deep time]] age of the solar system.<ref name=Arnett/> [[Uniformitarianism|Uniformitarians]] admit that Saturn's rings could not be older than about 100 million years.<ref name=Arnett/> They therefore propose that Saturn's rings formed from the disintegration of one or more moons, perhaps following a collision with a [[comet]].<ref name=Arnett/><ref name=Hamilton/> However, Wing-Huan Ip at the Max Planck Institute calculated that a comet-moon collision would not be sufficiently likely to occur in less time than 30 billion years. This is more than twice the age of the universe calculated from the [[Hubble constant]].<ref name=Harris>Harris, David M. "[http://www.answersingenesis.org/creation/v12/i4/saturn.asp How Old are Saturn's Rings]?" ''Creation'', 12(4):40–41. September 1990. Accessed May 18, 2008.</ref>

== Observation and Exploration ==

== Observation and Exploration ==