Changes

A '''nebula''', from the [[Latin]] word for ''[[cloud]]'', is a cloud of interstellar [[dust]] and [[gas | gases]]. <ref>http://fusedweb.pppl.gov/CPEP/Chart_Pages/5.Plasmas/Nebula.html</ref>. Nebulae have been observed both within the [[Milky Way]] [[galaxy]] and in other galaxies. These large clouds of mostly hydrogen gas can form stars an planets. Our solar system formed about 4.6 billion years ago from a nebula. <ref>http://www.windows.ucar.edu/tour/our_solar_system/formation.html</ref>

A '''nebula''', from the [[Latin]] word for ''[[cloud]]'', is a cloud of interstellar [[dust]] and [[gas | gases]]. <ref>http://fusedweb.pppl.gov/CPEP/Chart_Pages/5.Plasmas/Nebula.html</ref>. Nebulae have been observed both within the [[Milky Way]] [[galaxy]] and in other galaxies. These large clouds of mostly hydrogen gas can form stars an planets. According to most mainstream scientists, our solar system formed about 4.6 billion years ago from a nebula. <ref>http://www.windows.ucar.edu/tour/our_solar_system/formation.html</ref>

==External Links==

==External Links==