The expansion of the universe, as characterized by the Hubble constant, now has a new variable to add to the equation – the light from quasars!
The Hubble constant has long been a topic of debate with early measurements implying values of 625 km/s/Mpc and 500 km/s/Mpc. The latter value was found in 1928, by Edwin Hubble, through his observational studies of the recession velocities of galaxies. Hubble found that the recession velocity of galaxies increased with increasing distance at a proportional rate, now known as the Hubble constant. Since then, the techniques for determining the Hubble constant have undergone much improvement, yet a discrepancy still exists between the different measuring techniques.
Article by Dr. Amira Val Baker, Resonance Science Foundation Astrophysicist, läs mer.
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