Pre-Intermediate OurWorld Unit4

123456789
Across
  1. 3. __________ may live on other planets.
  2. 5. A______ has travelled to the moon.
  3. 7. The "Milky Way" is the name of our _______.
  4. 8. Planets ________ the sun.
  5. 9. Scientists collect_____ on the universe.
Down
  1. 1. Earth is the name of our_________.
  2. 2. Scientists _______ for life on other planets.
  3. 4. A vehicle that can go to space.
  4. 5. Mars is the fourth planet in our _________ system.
  5. 6. A person who works and travels in space.