These high school astronomy crossword puzzles make wonderful vocabulary reviews for students. This pack consists of seven crosswords highlighting the Moon, Mercury, Earth, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune, plus an answer key.The crossword puzzles are:*The Moon and Mercury (satellite, regolith, weaker gravitational pull, atmosphere, scarp, maria, billion, Caloris Planitia, synchronous orbit, craters, impact, resonance, Mercury, Neil Armstrong, meteorites)*Earth (hydrosphere, atm