Big Bang Theory

3. A region of spacetime where gravity is so strong that nothing has enough energy to escape it
4. The era that started when the gravitational effect of matter began to dominate the effect of radiation pressure
6. A continuous area or expanse which is free, available, or unoccupied
10. The apparent displacement or the difference in apparent direction of an object
11. Molecules formed by atoms consisting of antiprotons, antineutrons, and positrons
12. A unit of astronomical distance
14. The indefinite continued progress of existence and events in the past, present, and future
16. A hypothetical future where technology growth is out of control and irreversible

1. A hypothetical form of matter thought to account for approximately 85% of the matter in the universe
2. Measure of hotness or coldness expressed in terms of any of several arbitrary
5. Observed from distant stars and galaxies gives evidence that the universe is expanding
7. A pair of equal and oppositely charged or magnetized poles separated by a distance
8. When an object is moving towards us
9. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
13. The SI base unit of thermodynamic temperature
15. A completely empty space