101 meters ~10 light-years~3 parsecs 十光年 Most of the matter we know is formed into stars,spheres of gas nourished by central nuclear fires that often maintain the glow for a very long time.At this point in the journey, with no star nearby,we see the realm of the stars chiefly as a discant background,no differ. ent from the night sky we view from earth.For several frames the star background remains unchanged:The visible stars are strewn so deep in space that these steps are small in comparison.Hence they cause no noticeable shifts m▣P.C▣m十光年