The Red Shift or Doppler effect
Yes, there are some lenticular galaxies that are nearly 13 billion light years from the earth.
shifted to longer wavelengths, indicating that the galaxies were moving away from us. This observation led to the development of the theory of the expanding universe.
That the galaxy is moving away from us.
Expanding Or that the light is exiting a gravity hole (star).
No, the farthest galaxies from the Milky way are nearly 100000000000000 light years away.
Moving away from us
Yes, there are some spiral galaxies that are nearly 13 billion light years from Earth (I.e. T2003 1529 in the Ursa Major constellation).
No, actually, if the Doppler effect (if light is moving towards you, it takes on a blue tinge, but if light is moving away from you, light takes on a red tinge) is true, then galaxies are actually expanidng, just like the rest of the universe.
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.
The redshift of galaxies refers to the phenomenon where the light from distant galaxies shifts toward the red end of the spectrum, indicating that they are moving away from us. This observation, first noted by Edwin Hubble, suggests that the universe is expanding, as galaxies are not just receding from Earth but from each other. The greater the redshift, the faster a galaxy is moving away, supporting the idea that space itself is stretching. This relationship is encapsulated in Hubble's Law, which quantifies the expansion rate of the universe.
The light from distant galaxies is redshifted. The only reasonable explanation for that is that the galaxies are moving away from us.
Yes, they are usually of a similar size range to other types of galaxies, from a few thousand lightyears across to a million or more. Their formation is often as a result of two or more galaxies colliding, or coming close to each other.