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45:23
YouTube
HISTORY
The Universe: Pulsars & Quasars Infiltrate the Sky (S4, E10) | Full Episode | History
They sort of sound like the same phenomenon, but Pulsars and Quasars are very different. Pulsars are tiny--only a few miles across--but they spin as fast as a kitchen blender, in Season 4, Episode 10, "Pulsars & Quasars." #TheUniverse Subscribe for more from The Universe and other great The HISTORY Channel shows: https://histv.co ...
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A quasar (believed to be a galaxy in formation with a super-massive black hole at its center) is a pointlike object that has tremendous energy output, is very distant from the Earth, and has a large redshift. Its speed can be measured from Doppler-shift measurements of the light it emits. A certain quasar recedes from the Earth at a speed of 0.55 c. (a) How far away is it? (b) Assuming that the quasar has moved with the speed 0.55 c ever since the Big Bang, estimate the age of the Universe. | Nu
numerade.com
Oct 9, 2020
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