Across
- 3. ____ energy suggests that space itself is producing the energy needed to push the universe outward: it is the energy of space
- 4. How much of our universe is composed of dark energy?
- 7. Who created the cosmological constant?
- 8. Who first realized the universe was expanding? (Last Name)
- 9. a way astronomers use to tell the distance of any object that is very far away in the universe
Down
- 1. New theory of ______ states that the accelerating expansion of the universe is not due to dark energy, but rather, due to a theory of gravity that scientists have not formulated yet.
- 2. If it is true, it is the 5th fundamental force in nature.
- 5. How do scientists measure dark energy?
- 6. Dark energy causes gravitational fields to be ____
- 10. The first evidence from dark energy came from ____
