If you don’t know, it was Albert Einstein’s General Theory Of Relativity’s Papers from which the notion of the ever-expanding universe arrived.Īs a matter of fact, almost a decade before Edwin Hubble’s declaration of Hubble’s Expansion Equations in 1922, a Soviet Russian Mathematician and Physicist Alexander Friedmann had derived Friedmann’s Equations from Einstein’s Field Equation. Therefore, it is not truly a Doppler effect. Cosmological redshift is used to measure the physics of the expanding universe. On the other hand, if the galaxy is approaching the earth, it’s called Cosmological Blue-Shift. In fact, you can also say that the cosmological redshift was the phenomenon observed by Edwin Hubble which was used to explain the expansion of the universe This expanding universe theory is also known as Cosmological Red-Shift only and only if the galaxy is receding away from planet earth. Meaning, we are living in the ever-expanding universe. Not to mention, Hubble’s law solidified the physics of the expanding universe.
A phenomenon in today’s world is known as Cosmic Recession. In other words, According to Hubble’s law of cosmic expansion, all the galaxies are moving away from our own.
Hubble’s expansion law states that “Objects Observed In Extra-Galactic Space (Deep Space) Are Shifting Away Or Receding Away From Earth. What Is Hubble’s Law Of Cosmic Expansion? An artistic representation of the “Metric Expansion” of the Universe/Credit: Wikimedia Commons In fact, if Hubble’s expanding universe theory has not been discovered then we might have been still living in the dilemma that whether our universe is static or expanding or even our universe is shrinking. Yup, even more than the physics of black holes. First of all, you should know that Hubble’s Law Of Cosmic Expansion is the most celebrated Paper in the history of physical science.
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