Space Unit Crossword

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Across
  1. 2. - The gaseous outer layer of the Sun's atmosphere.
  2. 4. - Asteroids are small, rocky objects that orbit the Sun.
  3. 7. - Asteroids are small, rocky objects that orbit the Sun.
  4. 11. - a person who is trained to travel in a spacecraft.
  5. 12. - The planet on which we live; the world.
  6. 14. - The atmosphere is a mixture of gases that surrounds the Earth.
  7. 15. - A celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
Down
  1. 1. - Small particles of matter in space.
  2. 3. - is how astronomers explain the way the universe began.
  3. 5. - The sun together with the group of celestial bodies that are held by its attraction and revolve around it.
  4. 6. - cause to seem small or insignificant in comparison.
  5. 8. - A black hole is a cosmic body of extremely intense gravity from which even light cannot escape.
  6. 9. - A system of two stars where one revolves around the other or both revolve around a common centre.
  7. 10. - When the Moon is at its closest point in its orbit to the Earth at the same time as a full Moon
  8. 13. - An atom is the basic building block of chemistry.