Mars Monday

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Across
  1. 5. And, or, yet, but, or so (11)
  2. 7. _____puss, also known as Groucho glasses (6)
  3. 8. Taylor Swift album (3)
  4. 11. Sylvester Stallone film (5)
  5. 12. Star of the Labyrinth, The Prestige (5, 5)
  6. 14. Laughs slyly (8)
  7. 15. Smaller moon of Mars, named after the God of Dread (6)
  8. 18. Chewing gum brand (5)
  9. 22. Antonym of death (4)
  10. 23. Star of the Odyssey, Jason Bourne (4, 5)
  11. 26. Film starring George McKay that premiered this year at Edinburgh Film Festival (7)
  12. 27. Dust to dust (5, 2, 5)
Down
  1. 1. Star of I Jack Wright, Human Traffic (4, 4)
  2. 2. One who travels without destination (5)
  3. 3. Larger moon of Mars, named after the God of Fear (6)
  4. 4. Doctor Who species of green, honour-bound reptilians (3, 8)
  5. 6. Chocolate bar advertised with brotherly rivalry (4)
  6. 9. Greek God of War (4)
  7. 10. To overshadow (7)
  8. 13. Cold water (3)
  9. 16. Brown crunchy balls (9)
  10. 17. Alternative to cable television (9)
  11. 19. Treasure (6)
  12. 20. One of eight in our solar system (6)
  13. 21. Foundational support (4)
  14. 24. Lactic passage? (5, 3)
  15. 25. Dihydrogen Oxide (5)