Lost in Space

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Across
  1. 2. name we use to encompass everything
  2. 4. second planet from the sun in our solar system
  3. 5. when something goes around a planet or a star, it is in ______
  4. 9. a human who visits space
  5. 11. when one celestial body lines up with another, like the moon covering the sun from our view
  6. 12. biggest moon in our solar system
Down
  1. 1. a space rock, after it crashes down into a planet
  2. 3. a measurement of length defined by how far a particular type of particle can travel in 365 Earth days
  3. 6. the force keeping you down on the planet
  4. 7. planet with the most moons in our solar system
  5. 8. type of robot the U.S. space program sent to Mars
  6. 10. acronym that the U.S. government space program is known by