Galaxy

Just remember that you're standing on a planet that's evolving And revolving at 900 miles an hour. that's orbiting at 19 miles a second, so it's reckoned, a sun that is the source of all our power. The sun, and you and me, and all the stars that we can see, Are moving at a million miles a day, In an outer spiral arm, at 40,000 miles an hour, Of the galaxy we call the Milky Way. Our galaxy itself contains a hundred billion stars; It's a hundred thousand light-years side to side; It bulges in the middle sixteen thousand light-years thick, But out by us it's just three thousand light-years wide. We're thirty thousand light-years from Galactic Central Point, We go 'round every two hundred million years; And our galaxy is only one of millions of billions In this amazing and expanding universe.