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What diagram best represents the pattern of spectral lines from the same element when it was observed by Edwin Hubble in the light of one of the distant galaxies?
The best diagram to represent the pattern of spectral lines from the same element observed by Edwin Hubble in the light of distant galaxies is the redshift spectrum. This spectrum shows the spectral lines of elements shifted toward longer wavelengths (redshifted) due to the Doppler effect, indicating that the galaxies are moving away from us. The pattern of these lines remains consistent with the element's known absorption or emission spectrum, but the entire set of lines shifts uniformly to the red, reflecting the expansion of the universe.
What did the result of analysis of the spectral lines of the five galaxies reveal about their motion relative to earth?
The analysis of the spectral lines of the five galaxies revealed that their light is predominantly redshifted, indicating that they are moving away from Earth. This redshift is a consequence of the Doppler effect, which shows that the galaxies are receding due to the expansion of the universe. The degree of redshift also provides insights into their velocities, with more distant galaxies typically exhibiting greater shifts, supporting the theory of an expanding universe.
What was one form of evidence used to support the Big Bang theory?
The observation that red shifts of distant galaxies gets greater the further away the galaxies are.
If all galaxies begin to show blue shifts what would this indicate about the fact of the universe?
If all galaxies began to show blue shifts, it would indicate that the universe is contracting rather than expanding. This could suggest a reversal in the overall dynamics of the universe, potentially leading to a scenario known as the "Big Crunch," where galaxies move closer together and ultimately collide. Such a shift would challenge current cosmological models that support the expansion of the universe, which is primarily evidenced by red shifts observed in distant galaxies. This fundamental change would have profound implications for our understanding of cosmic evolution and the fate of the universe.
What evidence do we have to prove that galaxies rotate?
Doppler red shifts and blue shifts of light from the stars in the galaxies.
Why scientist don't expect to find galaxies that have large blue shifts?
This should be because of the fact that the Universe is expanding. You see a blueshift when objects move closer to you. Other than super distant galaxies, most galaxies will not measure to be a blueshift due to the fact that the Universe is expanding and accelerating.
Do all galaxies outside local group have red shifts?
Yes. Also, the size of the red-shift for all distant galaxies is directly proportional to their distance from us. This means that the space between us and all distant galaxies is expanding. Thus, Einstein's (initial) view that our Universe has been eternally stable in the location of matter must be false. No surprise that he referred to his early view as his "greatest blunder."
Supported by observed red shifts in the spectra of galaxies?
This redshift is a strong indication that the Universe is expanding. The only reasonable explanation of this redshift is the Doppler effect, and this means that the galaxies are moving away from us. The greater their distance from us, the faster they move away.
What is a increase in wavelength of light due to space expanding?
The increase in wavelength of light due to the expansion of space is known as redshift. As the universe expands, light traveling through space stretches, resulting in longer wavelengths. This phenomenon is most commonly observed in distant galaxies, where the light shifts toward the red end of the spectrum, indicating that these galaxies are moving away from us. Redshift is a key piece of evidence for the Big Bang theory and the ongoing expansion of the universe.
What is unexplained high speed of galaxies going into outer space?
The unexplained high speeds of galaxies moving away from us, often referred to as the "galactic recession," can be attributed to the expansion of the universe. This phenomenon is observed through redshift, where light from distant galaxies shifts towards longer wavelengths as they recede. While dark energy is thought to play a significant role in accelerating this expansion, the exact mechanisms behind the high velocities of certain galaxies remain an area of active research and debate in cosmology. Overall, these high speeds challenge our understanding of gravity and the distribution of mass in the universe.
Are Large red shifts within galaxies or between them?
Between them.
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.
