Table of Contents
- 1 Who described the universe as oscillating universe?
- 2 Why is the steady-state theory rejected?
- 3 What evidence would be the basis for accelerating expansion of the universe according to the steady-state theory?
- 4 What are the key evidence that disprove the steady state theory?
- 5 What is responsible for the acceleration of the expansion of the universe?
- 6 Who proposed the inflationary universe?
Who described the universe as oscillating universe?
William Saslaw
William Saslaw, an American astronomer, proposed at about the same time an oscillating model of the universe in which “the formation of structure, as well as the existence of life, always gets another chance” (Saslaw 1991, 45).
Why is the steady-state theory rejected?
Disproving the Steady-State Theory The evidence against the steady-state theory grew as new astronomical evidence was detected. For example, certain features of distant galaxies (such as quasars and radio galaxies) weren’t seen in nearer galaxies.
What evidence would be the basis for accelerating expansion of the universe according to the steady-state theory?
The key piece of evidence for this expansion is Hubble’s law, based on observations of galaxies, which states that on average, the speed with which a galaxy moves away from us is proportional to its distance.
Who made the oscillating theory?
Einstein first proposed this theory in the 1920’s in response to the model of the expanding universe.
Why is the Oscillating universe called such?
The Oscillating Universe Theory is a cosmological model that combines both the Big Bang and the Big Crunch as part of a cyclical event. That is, if this theory holds true, then the Universe in which we live in exists between a Big Bang and a Big Crunch.
What are the key evidence that disprove the steady state theory?
For most cosmologists, the definitive refutation of the steady-state model came with the discovery of the cosmic microwave background radiation in 1964, which was predicted by the Big Bang theory.
What is responsible for the acceleration of the expansion of the universe?
Observations of the explosions of white dwarf stars in binary systems, so-called Type Ia supernovae, in the 1990s then led scientists to the conclusion that a third component, dark energy, made up 68\% of the cosmos, and is responsible for driving an acceleration in the expansion of the universe.
Who proposed the inflationary universe?
Physicist Alan Guth
The Founder of Cosmic Inflation Theory on Cosmology’s Next Big Ideas. Physicist Alan Guth, the father of cosmic inflation theory, describes emerging ideas about where our universe comes from, what else is out there, and what caused it to exist in the first place.