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34 Astronomy

1. What is the most abundant element in the universe?

2. What is the name of the theory that explains the origin of
the universe?

3. What is a light-year a measure of?

4. What is the term for the remains of a massive star after it explodes as a supernova?

5. What is the phenomenon where the observed frequency of light from an object moving away from
the observer shifts to the red end of the spectrum?

6. What is the name of the closest galaxy to the Milky Way?

7. What is dark matter thought to account for in the universe?

8. What is the effect called when the gravitational pull of a massive object bends light from a distant
source?

9. What is the name of the boundary beyond which the expansion of the universe prevents us from
observing distant galaxies?

10. What is the term for the theoretical region of space where the gravitational pull is so strong that
not even light can escape?

Neutron star or black hole, Hydrogen, Andromeda Galaxy, Cosmic event horizon, Redshift,
Gravitational lensing, Black hole, The Big Bang Theory, The majority of the mass in the universe that
does not emit light., The distance that light travels in one year.

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