Edwin Hubble discovered that the universe was expanding in 1929 when he observed that distant galaxies were moving away from us, as indicated by their redshift in their spectral lines. This discovery led to the formulation of Hubble's law, which describes the relationship between a galaxy's distance and its velocity of recession.
universe is expanding
Edwin Hubble
Hubble observed that galaxies were moving away from each other, indicating that the universe is expanding. He discovered a relationship between a galaxy's distance from Earth and its velocity, known as Hubble's law, providing evidence for this expansion.
Edwin Hubble's discovery of red shift demonstrated that galaxies are moving away from each other, providing evidence for the expanding universe. This discovery supported the Big Bang theory and fundamentally changed our understanding of the universe's structure and evolution.
that the universe is expanding(: YouR WelomE
universe is expanding
As proven by Edwin Hubble, the universe is expanding.
Edwin Hubble
Edwin Hubble was responsible for the concept of the universe expanding.
The universe is expanding!
Edwin Hubble
Edwin Hubble compared the distances to galaxies (based on their brightness) and their redshifts (due to the Doppler effect) to discover the expansion of the Universe. By finding a relationship between these two quantities (dubbed Hubble's Law), he provided evidence that the Universe is expanding.
It was discovered by Hubble.
Edwin Hubble
Edwin Hubble.
Edwin Hubble.
Hubble was an astrophysicist in the early 20th century. He helped discover the rate at which the universe is expanding, which is now given by the Hubble constant. (H0=69km s^-1 Mpc^-1)