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It ends at that distance at which objects are, for all practical purposes, no longer bound to the solar system barycenter. This is usually defined by the Hill Sphere, which approximates the gravitational sphere of influence. One simple view of the extent of the Solar System is the Hill sphere of the Sun with respect to local stars and the galactic ...


I have found the answer to this question. Everybody uses the same ephemeris: the Jet Propulsion Laboratory Development Ephemeris or JPL-DE as it is known. The book Explanatory Supplement to the Astronomical Almanac explains the methods of the JPL-DE and how to use it.


"we have detailed knowledge of only one planetary system, the Solar System. Data from other planetary systems around both main sequence stars and pulsars ..."[1] In the above quote, one can see that the authors say the Solar System is a planetary system and in the very next sentence they say "planetary systems around...stars" so the question of whether the ...


I think it's largely a matter of personal preference. Some people will want you to be technically correct and only use "solar system" to refer to the Sun and the objects that are under its gravitational influence. Wikipedia defines it as such: The Solar System comprises the Sun and the objects that orbit it, whether they orbit it directly or by orbiting ...


There is a rule about average surface brightness: it is conserved as you change distance or magnification. For the gory details see. Telescopes make unresolved objects brighter, but for resolved objects, a telescope shows you the actual surface brightness (assuming that the exit pupil diameter is well matched to your eye's pupil (~7mm) and is not throwing ...


Yes, Pluto is a dwarf planet, along with Ceres and Eris which are in the Solar System. It was classified a dwarf planet in 2006 or 2007. Sorry for my inaccurate answer.


I've had my eye on this question for some time, but I haven't had the time to answer it. Sorry for not getting to it sooner. As zibadawa timmy said, you'd be hard-pressed to find the materials necessary for a star system if you're outside a galaxy. For one thing, there aren't any stellar nurseries in the intergalactic void (well, none that we know of. But ...

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