９ The size of the Universe【What is the Universe？】Dialogue with the Universe
・About the size of the Universe with the Milky Way is not known yet well, but it is said that the range of the spherical diameter of about 92 billion light years in diameter.
・By the way, the disk of the Milky Way galaxy is about 100 000 light-years in diameter. ・・・１×１０ˆ５
・Solar system is about 100,000 light-years in diameter. ・・・０．６×１０ˆ−３