What is one piece of evidence for support of how the universe began?

Some chemical elements were created soon after the Big Bang. Elements like hydrogen and helium. The Big Bang theory predicts how much of each element was made in the early universe. When astronomers look at very old galaxies and stars, the amount of each chemical they see agrees with the Big Bang theory.

What was Gamow’s hypothesis about the nature of the universe?

From his work on stellar evolution, Gamow postulated that the Sun’s energy results from thermonuclear processes. Gamow and Teller were both proponents of the expanding-universe theory that had been advanced by Friedmann, Edwin Hubble, and Georges LeMaître.

What is the evidence for the universe expanding?

In his short paper, Hubble presented the observational evidence for one of science’s greatest discoveries—the expanding universe. Hubble showed that galaxies are receding away from us with a velocity that is proportional to their distance from us: more distant galaxies recede faster than nearby galaxies.

What is Gamow’s theory?

There Gamow proposed a hypothesis that atomic nuclei can be treated as little droplets of so-called “nuclear fluid.” These views led ultimately to the present theory of nuclear fission and fusion.

What is Geiger Nuttall law explain?

In nuclear physics, the Geiger–Nuttall law or Geiger–Nuttall rule relates the decay constant of a radioactive isotope with the energy of the alpha particles emitted. Roughly speaking, it states that short-lived isotopes emit more energetic alpha particles than long-lived ones.

How did George Gamow and Ralph Alpher first explain the existence of elements?

Together Alpher and Gamow began calculating the relative abundance of elements that would be produced in a hot Big Bang. The pair assumed that the early universe was very hot and full of neutrons. Their calculations correctly showed that the abundance of elements in the universe should decrease with atomic mass.