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Across 5. aliens that live on mars 6. a natural satellite that orbits earth and reflects sun at night 7. A giant ball of hot gas that creates and emits its own radiation through nuclear fusion. 9. A bright eruption of hot gas in the Sun's photosphere. 12. A celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighboring region of planetesimals. 13. the path that a celestial body takes around a larger body 14. a big rock made of dust and ice that flies through space 15. something that orbits planets that is man made and gives us information them 16. the nearest star to earth that provides light for us

Down 1. the coolest kid that ever lived and is better at soccer than Ronaldo, Messi and Saurez combined 2. a red planet close to earth 3. The theory that suggests that the universe was formed from a single point in space during a cataclysmic explosion about 13.7 billion years ago. 4. a constellation that only can be seen from the southern equator 8. a hole in space with a strong gravity pull, often created by collapsed stars 10. a group of stars that on earth looks like milk 11. a darf planet that was once a planet