What would be your estimate of the age of the universe...?

Question

if you measured a value for Hubble's constant of Ho = 30.0km/s/Mly? assume that the expansion rate has remained unchanged during the history of the universe.

Answer 1

My goodness! H0 is the *present* value of the expansion parameter. H itself has not been constant.

I would also need estimates for:
1. The SDSS luminous red galaxy, baryon acoustic oscillation (BAO) distance parameter,
2. The present local mass density,
3. The distance to last scattering, z = 1089,
4. The distance ratio from z = 0.35 to z = 1089.

Answer 2

That value seems a little low. The most recent value for the Hubble constant was measured at 77 (km/s)/Mpc, according to the Chandra X-ray Observatory. Assuming that omega = 0, which means uniform expansion, the age of the universe is equal to 1/H, or 977793 million years/[H/(km/s/Mpc)].

If H = 30km/s/Mpc, then the age of the universe is 32593.1 million years, or 32.5931 billion years.

Answer 3

Your teacher want you to get the age from the given Hubble constant, not from the WMAP results. Convert your Hubble constant into units of 1/years, then take the inverse. Hint - km can be converted to Mly (mega light years, or light years * 10^6) and cancelled.

Answer 4

You are working under a false assumption! There is no way we know that the expansion rate has been constant or even, as supposed, decreasing. Current observation supports the fact that the expansion of the universe is actually accelerating.

As far as we can tell, the universe is at least 14 billion years old (more or less) which is the maximum that we can detect. Current theory supports that there could be other galaxies or "something" beyond this boundary, but they could be moving away from us faster than the speed of light. This would mean that we will never observe this part of the universe (or at least with current technology).

Answer 5

You're assuming that the expansion rate has remained the same throughout the history of the universe. However, there's evidence that it has both slowed and increased (..it's current condition..)

Scientists have given their estimate of the age of the universe as 13.7-billion years.

Answer 6

The Universe have faith it or not does not have an "age" , be certain you examine what Professor Fred Hoyle says . the huge Bang is a massive humorous tale, it in no way exceeded off lower back see Fred Hoyle's papers

Answer 7

Hey Funk don't you that Hubble's constant everywhere. Just calculate it youself.

Answer 8

i heard it was like 13-15 billion years old

Answer 9

estimate age of the universe id say always has been. its infinite.