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Questions and Answers
What is the most widely accepted theory on how the universe came into existence?
What is the most widely accepted theory on how the universe came into existence?
The Big Bang Theory
Who first suggested the Big Bang Theory?
Who first suggested the Big Bang Theory?
Georges Lemaitre
What is the Cosmic Microwave Background?
What is the Cosmic Microwave Background?
What was discovered in the 1960s that aided Edwin Hubble's calculations?
What was discovered in the 1960s that aided Edwin Hubble's calculations?
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What is the Planck Era in relation to the universe's expansion?
What is the Planck Era in relation to the universe's expansion?
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What began to separate during the Grand Unification Era?
What began to separate during the Grand Unification Era?
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What does inflation lead to in terms of particles?
What does inflation lead to in terms of particles?
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Match the following eras with their significant events:
Match the following eras with their significant events:
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The four separate forces that emerged were Strong Nuclear Force, Weak Nuclear Force, Electromagnetism, and ___?
The four separate forces that emerged were Strong Nuclear Force, Weak Nuclear Force, Electromagnetism, and ___?
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Study Notes
The Big Bang Theory
- Most widely accepted theory explaining the Universe's formation.
- Initially proposed by Georges Lemaitre in 1927, who was a Catholic priest, physicist, and mathematician.
- Describes the Universe's creation from a singularity, an extremely hot and dense point smaller than an atom that exploded, generating matter, space, and time.
Key Events in Early Universe Formation
- 10^-43 seconds (Planck Era): The Universe characterized by extreme heat, density, and turbulence; represents physics at the absolute beginning of time.
- 10^-35 seconds: Major inflation occurs, leading to a dramatic burst of expansion, pushing the Universe outward.
- 10^-32 seconds: After inflation, energy within the Universe allows for the formation of matter particles, largely resulting in their annihilation.
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10^-11 seconds: Emergence of four fundamental forces after the electroweak force separates:
- Strong Nuclear Force
- Weak Nuclear Force
- Electromagnetism
- Gravity
Cosmic Microwave Background
- Discovered in the 1960s, represents the cooled remnant of the first light that could travel freely throughout the Universe.
- Utilized by Edwin Hubble to measure the velocities of celestial bodies moving apart, showcasing the Universe's expansion through cosmological redshift.
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Description
Explore the widely accepted Big Bang Theory and its explanation of the origin of the universe with these flashcards. Test your knowledge on key concepts and terms related to the formation of the cosmos. Ideal for anyone interested in astronomy and cosmology.
