Crossword puzzles engage the mind in solving a puzzle with clues only. After solving particular clues, letters in the answers help you solve the remaining clues.
| Solve the puzzle by providing answers to the clues. |
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1. Select the clue that you would like to solve |

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2. Type in the answer to the clue. If the answer is correct, the clue answer will appear on the crossword. |
(Each puzzle will pop up a new window so you will not lose your location on this site)
1. Life Support
2. Energy
3. Propulsion
4. Missions
5. Dangers
6. Spacecraft
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