Mark the appropriate box. Galaxies never crash into each other. Quasars are probably super giant black holes. A planetary nebulae is surrounded by planets. Black holes use suction power to pull things into them.
Scientists believe that new stars form inside nebulas.
Complete each of the following questions using complete sentences. Include as much information as you can, but be careful to write it in your own words. Explain why looking at an object which is 15 billion light years away also means you are looking at the way that object looked 15 billion years ago. In your own words describe the structure of the Universe.