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Across 2. tiny body of stuff from the solar system enters the earth's atmosphere 5. the 6th planet in our solar system 8. the 2nd planet in our solar system 11. the inner part of any planet 13. splits light energy into patterns of colour to observation 15. a unit of measurement equal to earth's average distance from the sun 19. Examining rocks, terrain, and material in space 20. the transformation of hydrogen atoms into helium atoms begins and the star turns on 22. Searching for life outside Earth 25. an artificial object sent into orbit around the Earth 27. the smallest and innermost known circumstellar disc in the Solar System 28. Applying the laws of physics in space 30. something twinkling in the sky we all love 32. the study of objects and matter outside of the Earth's atmosphere 33. a region of space having a gravitational field so intense that no matter or radiation can escape 34. WAS a planet 35. the 5th planet in our solar system 36. one of this is 63240AU

Down 1. a cloud of gas and dust 3. areas that appear dark on the surface of the sun 4. a small piece of rock or dust that burns up in the Earth's atmosphere 6. the 4th planet in our solar system 7. a person trained to travel in a spacecraft 9. the 8th planet in our solar system 10. when the Moon passes between Earth and the Sun 11. the 3rd layer of the sun 12. a large collection of stars, gas, and dust 14. one of 12 specific constellations of the zodiac that the sun passes through 16. the collection of planets and other objects that orbit the Sun 17. the first layer of the sun 18. the 7th planet in our solar system 21. the force that attracts a body toward the center of the earth 23. the 1st planet in our solar system 24. Mapping celestial bodies 26. the amount of energy produced by a star each second 29. the 3rd planet in our solar system 31. a small, icy celestial body that orbits the Sun