One of the main reasons the Hubble Space Telescope was built and launched was to measure how fast the universe is expanding. If the expansion turns out to be faster than we thought, our estimate for the age of the universe will be:
A) unaffected.
B) younger (less time between now and the Big Bang).
C) older (more time between now and the Big Bang).

Question

Quizplus · Accepted Answer

If the expansion of the universe turns out to be faster than we thought, it would mean that objects in the universe have been moving away from each other at a faster rate than we previously estimated. This would imply that they were closer together in the past than we thought, leading to a shorter amount of time since the Big Bang and a younger estimate for the age of the universe.

One of the Main Reasons the Hubble Space Telescope Was