Across
- 3. a gravitational field so intense that matter can't escape.
- 5. natural luminous body visible in the sky at night.
- 7. a person trained to travel in spacecraft.
- 10. a repeating path that one object in space takes around.
- 11. the distance of light that travels in one year.
- 12. the light and warmth received from the earth.
- 13. National Aeronautics Space Administration.
- 14. a band of light that can be seen in the night sky.
Down
- 1. the natural satellite of the earth visible at night.
- 2. a giant cloud of dust and gas in space.
- 4. leftover formation of our solar system.
- 6. an area on the celestial sphere in which a group of visible stars form.
- 8. The branch of Science that deals with space and universe.
- 9. the planet we live on.