The term observable universe refers to
A. that portion of the universe that we have so far photographed through telescopes.
B. the portion of the universe that can be seen by the naked eye.
C. the portion of the universe that is not hidden from view by, for example, being below the horizon.
D. that portion of the universe that we can see in principle, given the current age of the universe.
Answer:D
The term observable universe refers to
A. that portion of the universe that we have so far photographed through telescopes. B. the portion of the universe that can be seen by the naked eye. C. the portion of the universe that is not hidden from view by, for example, being below the horizon. D. that portion of the universe that we can see in principle, given the current age of the universe.