Home > Astronomy > Expansion of the Universe

According to Hubble's constant how old is the universe?

Answer 1

13.8 billion years

The Hubble constant is a measure of the rate of this recession that causes our universe to expand. Dark matter, which is thought to be present within and between galaxies but has not yet been precisely identified as what matter it is, is thought to be the cause of our universe's expansion.

The current estimate of 67.6 km/s/mega parsec is based on 3-sd approximations made in this decade. The age of our universe is estimated to be 13.8 billion years based on the reciprocal.

The Hubble constant's units of km/megaparsec must be converted to light year (ly) / ly for this estimate, and the time unit must be changed from second to year.

See the later ESA Planck Mission and the earlier NASA WMAP project as sources.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Luca de

Based on Hubble's constant, the universe is roughly 13.8 billion years old.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.