space crossword

3. a group of stars forming a recognisable pattern that is named after its form or identified with a mythological figure
7. the vast expanse of nothingness
8. the collection of 8 planets and their moons in orbit around the sun, together with other celestial objects
10. a spheroid of plasma held together by its own gravity, and produces light and heat energy from nuclear fusion reactions
12. the use of technology to travel through space

1. the scientific branch of studying space.
2. everything that exists including space itself
4. a celestial body moving in an elliptical orbit around a star
5. a system of millions of stars with gas and dust, held together by the gravitational pull of a black hole
6. the universe seen as a whole
9. the rapid expansion of matter starting from a singularity, which started the universe
11. an annual calendar containing important dates and statistical information such as astronomical data and tide tables