To improve your keyboarding skills, you should

Learn you'r keyboard, find which position best suits it etc

Just keep practicing and make sure your fingers are at the right spots.

-- A galaxy is a collection of a huge number of stars ... possibly hundreds
of billions of stars in a galaxy. 

-- If a star has planets in orbit around it, then the star and its planets make up
one solar system.

-- There could be hundreds of billions of solar systems in one galaxy.