Space Crossword!

12345678910111213141516171819
Across
  1. 3. Old-timey message carriers
  2. 5. It can be cruel, poetic or blind
  3. 7. As seen in chemistry class?
  4. 10. MVEM_SUN
  5. 11. _ of Elea, well known for his paradoxes
  6. 13. Richest man in history
  7. 14. De _ (Anew)
  8. 16. You can't say it doesn't count
  9. 17. Items for those seeking closure
  10. 19. make a bust, say
Down
  1. 1. Temp job?
  2. 2. Macchu Picchu worshipper
  3. 4. Wizard of Menlo Park
  4. 6. Hagia __
  5. 8. Magnesium or Aluminium
  6. 9. Basic amino acid
  7. 12. Shakespeare's meter
  8. 15. Joseph of swimming fame
  9. 16. Egyptian sun god
  10. 18. Ocular affliction