He noticed that the light emitted from galaxies is 'red-shifted'. This means it is slightly redder than it should have been. This is due to the Doppler Effect. The Doppler Effect is when things are moving towards you the waves are closer together and when things are moving away from you the waves are further apart.
Hubble did not conclude that the Universe is expanding. Hubble thought the red shift indicated a unrecognized principle of nature. Hubble's constant actually shows the universe is bounded at R=150kMpc/31 and H= c/R = 62km/s/Mpc. The increase red shift velocity indicates a decreasing universe.
Hubble's discovery of the expanding universe in the 1920s provided evidence against the static universe model favored at the time, which relied on a cosmological constant to maintain stability. By observing that galaxies were moving away from each other and the universe was expanding, Hubble's findings contradicted the need for a cosmological constant to explain a static cosmos.
The best supporting evidence that the universe is expanding is that galaxies are receding from one another, indicating that the universe is expanding over time. This observation is based on the redshift of galaxies, known as Hubble's Law.
Edwin HubbleAnswer2:Hubble did not believe the universe is expanding. The universe is not expanding like the big bang, it is excited like an atom. The electrons jump to a higher level and lower their speed. The lower speed is a lower energy state, the max energy is when v=c.Hubble;s relationship v=HD indicates the distance D from the max energy state, where v = c.Hubble's Constant is dR/Rdt =c/R =H = 300M/150TT = 2E-18 m/s x31E21 = 62km/s/Megaparsec.
Red shift supports the theory of the expanding universe proposed by Edwin Hubble. The observed red shift in the spectra of distant galaxies indicates that they are moving away from us, providing evidence for the idea that the universe is continuously growing and expanding.
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.
As proven by Edwin Hubble, the universe is expanding.
Edwin Hubble suggested the evidence of an expanding universe based on his observation of galaxies moving away from each other with increasing speed. This observation led to the development of the Big Bang theory, which proposes that the universe began as a single point and has been expanding ever since.
Hubble did not conclude that the Universe is expanding. Hubble thought the red shift indicated a unrecognized principle of nature. Hubble's constant actually shows the universe is bounded at R=150kMpc/31 and H= c/R = 62km/s/Mpc. The increase red shift velocity indicates a decreasing universe.
Edwin Hubble
universe is expanding
Edwin Hubble was responsible for the concept of the universe expanding.
Hubble's discovery of the expanding universe in the 1920s provided evidence against the static universe model favored at the time, which relied on a cosmological constant to maintain stability. By observing that galaxies were moving away from each other and the universe was expanding, Hubble's findings contradicted the need for a cosmological constant to explain a static cosmos.
Galaxies are moving away from each other in a constantly expanding universe.
The universe is expanding!
Edwin Hubble
The best supporting evidence that the universe is expanding is that galaxies are receding from one another, indicating that the universe is expanding over time. This observation is based on the redshift of galaxies, known as Hubble's Law.