How big is the universe?  Billions of stars – planets – galaxies
{"Image DocumentName": "What is the difference between a solar system, galaxy, and the universe?", "Image ImageDescription": "Solar System \u2013 our solar system includes our sun, moon, asteroid belt, and 9 planets. Our solar system is part of the Milky way Galaxy. The universe is made up of many galaxies.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}