The universe contains different types of particles 2
Electrons (e ) are examples of leptons, a class of elementary particleswhich are not made of quarks. The mass of an electron is m…
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The universe contains different types of particles 1
The material objects which surround us during our everyday life are madeof protons, neutrons, and electrons. 5 Protons and neutron…
The universe contains different types of particles
It doesnt take a brilliant observer to confirm that the universe contains alarge variety of different things: ships, shoes, seal…
Allah u Akbar
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Bismillah
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Galaxies show a redshift proportional to their distance 3
Just as the Hubble time provides a natural time scale for our universe,the Hubble distance, c/H 0 = 4300 400 Mpc, provides a natu…
Galaxies show a redshift proportional to their distance 3
The Hubble time of 14 Gyr is comparable to the ages computed forthe oldest known stars in the universe. This rough equivalence is…
Galaxies show a redshift proportional to their distance 2
If galaxies are currently moving away from each other, this implies theywere closer together in the past. Consider a pair of galax…
Galaxies show a redshift proportional to their distance 1
You can easily demonstrate that an observer in galaxy 2 or galaxy 3 willfind the same linear relation between observed recession …
Galaxies show a redshift proportional to their distance
When we look at a galaxy at visible wavelengths, we are primarily detectingthe light from the stars which the galaxy contains. Thu…
