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How did scientists belived that distant galaxies were rapidly moving away from the earth?
Scientists believed that distant galaxies were rapidly moving away from Earth primarily due to the observation of redshift in their light spectra. This phenomenon, known as the Doppler effect, indicated that as galaxies move away, their light shifts toward longer wavelengths (red). Edwin Hubble's observations in the 1920s showed a correlation between the distance of galaxies and their redshift, leading to the formulation of Hubble's Law, which demonstrated that the universe is expanding. These findings provided strong evidence for the Big Bang theory and transformed our understanding of the cosmos.
How do red shifts were used by cosmologists to determine that the universe is expanding?
A Galaxy's red-shift can be used to determine how fast it is travelling away from you. The opposite is "blue-shift" which is what happens when the Galaxy is travelling towards you.The first astronomers, such as Edwin Hubble, to analyse the light coming from distant galaxies discovered that almost all of them were red-shifted, indicating that they were almost all heading away from us. This was the first indication that the universe was expanding.
What destroyed the steady state theory?
Briefly, the Steady State theory assumes that the Universe looked the same in the past as it does now. Observations of distant galaxies showed that this is not the case - distant galaxies are quite different to the ones that are closer by. Note that if you look at distant galaxies, you are observing the past of the Universe, because of the time it takes light to get here. That evidence played a part, but it was the detection of the "cosmic microwave background radiation". That was what convinced most astronomers that the Big Bang Theory was correct.
Who showed there were other galaxies in the universe?
Hubble.
Who gave the first evidence of the Big-Bang theory?
Edwin Hubble showed that the red-shift of distant galaxies was as predicted by Georges LeMaitre's hypothesis, which was later named the Big Bang.
Who showed other galaxies existed and the universe is expanding?
Edwin Hubble
Who showed that galaxies exist and observed the universe is expanding?
Edwin Hubble.
Who showed all galaxies and discovered that the universe is expanding?
Steven hawking
Who showed other galaxies existed and observed the universe is expanding?
Edwin Hubble
Who showed that other galaxies existed and observed that the univeres is expanded?
Edwin Hubble
Who showed that other galaxies existed and obsserved that the universe is expanding?
Edwin Hubble.
Who showed other galaxies existed and observed the universe expanding?
Edward Hubble
