1. The Milky Way

2. Some Galactical Measurements
Speed of light = 299, 793, 458 m/s – One Light Year - It is the distance that light can travel in one year it can travel about 10 trillion km. More precisely, one light-year is equal to 9,500,000,000,000 kilometers.
One Astronomical Unit (AU) a unit of measurement equal to million kilometers, the mean distance from the center of the earth to the center of the sun.
One parsec is equal to about 3.26 light-years or 31 trillion kilometres (31×1012 km) or 19 trillion miles(19×1012 mi)

3. Spiral
Elliptical
Irregular
Lenticular
Peculiar
Ring
Spiral
Starburst

5. Milky Way Statistics Radius = 52,850 Light Years Stars = 250 Billion
Rotation = 240, 000, 000 years
Sun distance to center = 26,400 Light Years
It is believed that there is a supermassive black hole in the middle of the Milky Way

6. Next closest star system – Alpha Centauri – 4. 3 Light Years
Next closest star system – Alpha Centauri – 4.3 Light Years. It consists of two stars called a Binary Star System. They rotate around each other once every 80 years. They are separated by 23 AUs
Next closest to that - Proxima Centauri – 4.22 light years about 13,000 AUs from the other two stars. Astronomers announced in August 2016 that they had detected an Earth-size planet orbiting Proxima Centauri. The newfound world, known as Proxima b, is about 1.3 times more massive than Earth, which suggests that the exoplanet is a rocky world, researchers said.