Across
- 3. are frozen leftovers from the formation of the solar system composed of dust, rock and ices
- 6. was an American astronaut and aeronautical engineer, and the first person to walk on the Moon.
- 7. The missile man of India.
Down
- 1. A hole in the universe through which light does not pass.
- 2. A newly-discovered comet dubbed was visible in 2020
- 4. The solar system where earth is.
- 5. natural satellite
- 6. National Aeronautics and Space Administration