Letter to the Editor S

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Across
  1. 5. To argue that something is right or worth keeping. (6)
  2. 6. A message that tells you danger is coming. (7)
  3. 7. To keep something safe. (7)
  4. 10. Travelling to and studying new places, like space. (11)
Down
  1. 1. A machine in orbit that can warn towns about storms. (9)
  2. 2. The person you write to in parliament about your area. (6)
  3. 3. Smart; Rhodes says do not be fooled by a ___ letter. (6)
  4. 4. The money set aside for something. (6)
  5. 8. Taking care and not being fooled too easily. (7)
  6. 9. Planned sets of work, like the space ones Mercer wants to close. (10)