SPACE CROSSWORD

Edit Answers
123456789101112131415161718
Across
  1. 1. BELT Distant solar system region (10).
  2. 7. Gravitational stretching effect (17).
  3. 10. Study of the universe's origins (9).
  4. 11. Edge of the sun’s influence (10).
  5. 12. RAY BURST Brief but intense cosmic explosion (15).
  6. 13. Point of orbit farthest from Earth (6).
  7. 16. Universe's most common element (8).
  8. 17. Opposite of normal matter (10).
  9. 18. Astronomical distance unit (9).
Down
  1. 2. HORIZON Boundary of a black hole (13).
  2. 3. Beyond lunar orbit (10).
  3. 4. Orbital tilt (11).
  4. 5. NASA's X-ray space telescope (7).
  5. 6. Tiny space debris (14).
  6. 8. Closest stellar neighbor (7).
  7. 9. Extrasolar body (9).
  8. 14. Illinois particle physics lab (8).
  9. 15. ALPHA Hydrogen spectral line (10).