The message

1234567891011
Across
  1. 2. The planet's name
  2. 5. The spaceship's name
  3. 6. The color of the thread from her scarf
  4. 7. Her best friend
  5. 10. The flowers blooming in the earth garden
  6. 11. The lady in the hologram
Down
  1. 1. What the seedlings were infected with
  2. 3. Astra's favorite hobby
  3. 4. Astra's favorite physicist
  4. 8. What astra calls her grandmother
  5. 9. The color of Astra's eyes