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Across 3. a scientist who studies the stars, planets, and other natural objects in space 4. because they do not understand something 7. a form containing a set of questions; submitted to people to gain statistical information 9. having or showing great excitement and interest 11. become invisible or unnoticeable 12. capability of existing or happening or being true 13. someone whose job is to discover what has happened in a crime or other situation and to find the people involved. 14. a person whose job is to collect news and write about it for newspapers, magazines, television, or radio. 17. on a ship, train, plane or other vehicle 19. a living thing is of an unknown or unfamiliar kind. 21. stop thinking about sth. or fire sb. 22. something that happens, often something that is unpleasant. 23. at present in the world as a real thing 24. happen

Down 1. the building of things such as houses, factories, roads, and bridges. 2. a sudden burst of light or of something shiny or bright. 5. having the reason or cause not made clear 6. the sound of laughing 8. take to be the case or to be true; accept without verification or proof 10. a message that is stated or declared 15. surprising greatly 16. introduce the reason for something happening. 18. a person who saw an event such as an accident or crime is a person who saw it. 20. anything that you see, experience, read, or are told that causes you to believe that something is true or has really happened. 22. an accident that results in physical damage or hurt