Farewell crossword

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Across
  1. 5. Unusual form of gold
  2. 6. Some say there is a function for it
  3. 7. Thermodynamics' fault
  4. 10. One giant leap for man, one small step for mankind
  5. 12. Beneficial outside, undesirable inside
  6. 13. There is a time for it at about 6 pm
  7. 14. Blowing in the vacuum
  8. 15. Alluring molecule
  9. 16. Ordered today but due ...
  10. 18. Better hide your samples from this lady
  11. 23. Impossible to produce repeatedly
  12. 25. Requires frequent offerings to grow constantly
  13. 28. May be visual
  14. 30. Has a job
Down
  1. 1. One to rule them all
  2. 2. Not the easiest abbreviation to remember
  3. 3. Silicon shouldn't listen to it
  4. 4. A file you need for phase recognition
  5. 8. Good for waitresses but unpredictable
  6. 9. For deposition and staying healthy
  7. 10. Good format for calculating the activation energies
  8. 11. Worse than attack
  9. 14. Plane figure for systems testing
  10. 17. Mysterious creatures not seen for almost a year
  11. 19. What machines are capable of and some students aren't
  12. 20. The last hope in technical problems
  13. 21. The first lord
  14. 22. Five, six, or seven but hard to see
  15. 24. Many needed to master microscopy
  16. 26. Breaks
  17. 27. Some say the biggest mystery in the world
  18. 29. To work and at work