Changes

41:3.9 [http://en.wikipedia.org/wiki/Variable_star Stellar variables] have numerous [[origins]]. In some [http://en.wikipedia.org/wiki/Double_Stars double stars] the [[tides]] caused by rapidly changing distances as the two [[bodies]] swing around their orbits also occasion periodic fluctuations of [[light]]. These [[gravity]] variations produce regular and recurrent flares, just as the capture of [http://en.wikipedia.org/wiki/Meteors meteors] by the [[accretion]] of [[energy]]-[[material]] at the [[surface]] would result in a comparatively sudden flash of [[light]] which would speedily recede to [[normal]] brightness for that [[sun]]. Sometimes a sun will capture a stream of [http://en.wikipedia.org/wiki/Meteors meteors] in a line of lessened [[gravity]] [[opposition]], and occasionally collisions [[cause]] stellar flare-ups, but the [[majority]] of such [[phenomena]] are wholly due to internal fluctuations.

41:3.9 [http://en.wikipedia.org/wiki/Variable_star Stellar variables] have numerous [[origins]]. In some [http://en.wikipedia.org/wiki/Double_Stars double stars] the [[tides]] caused by rapidly changing distances as the two [[bodies]] swing around their orbits also occasion periodic fluctuations of [[light]]. These [[gravity]] variations produce regular and recurrent flares, just as the capture of [http://en.wikipedia.org/wiki/Meteors meteors] by the [[accretion]] of [[energy]]-[[material]] at the [[surface]] would result in a comparatively sudden flash of [[light]] which would speedily recede to [[normal]] brightness for that [[sun]]. Sometimes a sun will capture a stream of [http://en.wikipedia.org/wiki/Meteors meteors] in a line of lessened [[gravity]] [[opposition]], and occasionally collisions [[cause]] stellar flare-ups, but the [[majority]] of such [[phenomena]] are wholly due to internal fluctuations.

41:3.10 In one group of [http://en.wikipedia.org/wiki/Cepheid_variable variable stars] the period of [[light]] fluctuation is directly dependent on [[luminosity]], and [[knowledge]] of this [[fact]] enables [[astronomers]] to utilize such [[suns]] as [[universe]] lighthouses or [http://en.wikipedia.org/wiki/Cepheid_variable accurate measuring points] for the further [[exploration]] of distant [http://en.wikipedia.org/wiki/Star_cluster star clusters]. By this [[technique]] it is possible to [[measure]] stellar distances most precisely up to more than one million [[light-years]]. Better [[methods]] of [[space]] [[measurement]] and improved [http://en.wikipedia.org/wiki/Telescope telescopic] [[technique]] will sometime more fully disclose the ten grand divisions of the [[superuniverse]] of [[Orvonton]]; you will at least recognize eight of these immense sectors as enormous and fairly [[symmetrical]] [http://en.wikipedia.org/wiki/Star_cluster star clusters].

41:3.10 In one group of [http://en.wikipedia.org/wiki/Variable_star variable stars] the period of [[light]] fluctuation is directly dependent on [[luminosity]], and [[knowledge]] of this [[fact]] enables [[astronomers]] to utilize such [[suns]] as [[universe]] lighthouses or [http://en.wikipedia.org/wiki/Cepheid_variable accurate measuring points] for the further [[exploration]] of distant [http://en.wikipedia.org/wiki/Star_cluster star clusters]. By this [[technique]] it is possible to [[measure]] stellar distances most precisely up to more than one million [[light-years]]. Better [[methods]] of [[space]] [[measurement]] and improved [http://en.wikipedia.org/wiki/Telescope telescopic] [[technique]] will sometime more fully disclose the ten grand divisions of the [[superuniverse]] of [[Orvonton]]; you will at least recognize eight of these immense sectors as enormous and fairly [[symmetrical]] [http://en.wikipedia.org/wiki/Star_cluster star clusters].

==41:4. SUN DENSITY==     

==41:4. SUN DENSITY==