If the Hubble constant were twice as large and the expansion rate was constant, what would be the approximate age of the universe?

Question

Quizplus · Accepted Answer

The age of the universe is inversely proportional to the Hubble constant. If the Hubble constant were twice as large, the universe would appear to be expanding twice as fast, implying it would reach its current state in half the time. Given the current estimate of the universe's age is about 14 billion years, doubling the Hubble constant would suggest an age of about 7 billion years.

If the Hubble Constant Were Twice as Large and the Expansion