Science

3. A fixed luminous point in the night sky which is a large, remote incandescent body like the sun.
5. The physical universe beyond the earth's atmosphere.
7. A hypothetical or fictional being from another world.
10. The branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.
11. Unidentified flying object.
12. A cylindrical projectile that can be propelled to a great height or distance by the combustion of its contents

1. A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
2. A person who is trained to travel in a spacecraft.
4. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
6. The branch of science that deals with celestial objects, space, and the physical universe as a whole.
8. The branch of science that deals with the earth's physical structure and substance, its history, and the processes that act on it.
9. The branch of science concerned with the nature and properties of matter and energy.