Assessment. Identity 1. Is the galaxy that contains the Earth, the Sun, and the solar system, 2. is twinks of light, 3. is a scientist who studies space and the Universe beyond Earth. 4. is the distance that light travels in one year, about 6 billion miles. 5. is the branch of science that studies space. 6. remain in a constant position in the sky, used for navigation 7. _ made up of this constellation's seven brightest stars. form a shape that looks like a dipper. 8. is a very light gas and one of the most abundant gases in the Universe. 9. is a group of stars in the night sky forming patterns that look like animals, objects, or characters. 10. is to bend as you move from one medium to another