Our galaxy's arms spiral outward. The Milky Way is a type of galaxy called a spiral galaxy.
The shape of our galaxy, the spiral, is not irregular. Nearly 70% of the galaxies closest to the Milky Way are spiral. Our galaxy does not contain the universe: the universe contains at least one hundred billion galaxies.
It was an asteroid that came to earth two billions years ago and scientists says that there might be another one coming.so we might live in space for a couple of months or years. so that why the dinosaur die.
