The Galaxy or The Milky way is the Sun and all stars what we see in the night sky
The number of stars in Galaxy: 1 billion
The shape of the Galaxy: It's like a huge disc with a bulge in the middle The Galaxy is about one hundred light years in diametr
Other Galaxies:There are the thousand of millions Andromeda Galaxy, The large and small Magellanic Clouds
Travel to other Galaxies:By the words of Expert travelling will be possible in huge starships But it takes much time