What is Hubble's Constant and how was it found?

Question

Levi Anderson · Accepted Answer

the ratio of speed of recession of galaxy (due to expansion ) of universe) to its distance from observer is called hubble's constant.
it was simply derived from general relativity equations

Josiah Adams · Answer

One galaxy after another seemed to move away.

One space body's apparent motion is always relative to the

another's motion.

Galaxies move similarly to space islands.

Doppler's effect, which measures how fast light moves in a galaxy, is used to estimate

wave length that is released from a source is altered by the motion of the

light origin.

A galaxy is an array of light sources that originate from its

countless component stars.

Regarding this proposal, Edwin Powell Hubble (1889–

found that there was a linear relationship between speed and

distance

The speed changes at a constant rate in relation to distance.

This Hubble constant #H_0# = 71 km/sec/parsec.

Once the units are converted to an appropriate form, the age of our universe

is estimated as 1/#H_0# = 13.77 billion years.We are able to

approximate

"Answering anticipated queries" is the definition of clarification. For the query

"How are you doing that?"

Should T represent the time dimension,

#[H_0]= T^(-1)#, and so, #[1/ [H_0 ]]=T#

Asher Cohen · Answer

undefined The expansion rate of the universe is represented by the symbol $ H_0 $, which was discovered by the American astronomer Edwin Hubble in the 1920s. Hubble found that galaxies are moving away from one another, and that the speed at which they are recessioning is proportional to their distance from Earth. This relationship is represented by Hubble's Law, which is $ v = H_0 \times d $, where $ v $ is the velocity of recession, $ d $ is the distance to the galaxy, and $ H_0 $ is Hubble's constant. Hubble first estimated the value of $ H_0 $ to be approximately 500 km/s/Mpc, but more recent measurements have refined it to be around 70 km/s/Mpc.