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Questions and Answers
Which theory states that the universe has been expanding since its creation in the Big Bang about 13 billion years ago?
Which theory states that the universe has been expanding since its creation in the Big Bang about 13 billion years ago?
- Steady State Theory
- Big Crunch Theory
- Inflation Theory (correct)
- Oscillating Universe Theory
What is the estimated diameter of the universe?
What is the estimated diameter of the universe?
- 10 billion light years (correct)
- 13 billion light years
- 13 million light years
- 10 million light years
Who proposed the Big Bang Theory?
Who proposed the Big Bang Theory?
- Georges Lemaître (correct)
- Isaac Newton
- Albert Einstein
- Stephen Hawking
Which theory suggests that the universe is constantly expanding at an accelerated rate?
Which theory suggests that the universe is constantly expanding at an accelerated rate?
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Which theory proposes that the universe will eventually collapse in on itself?
Which theory proposes that the universe will eventually collapse in on itself?
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Study Notes
Big Bang Theory
- Proposes that the universe originated from an extremely hot and dense state approximately 13 billion years ago.
- Suggests continuous expansion of the universe since its creation.
Diameter of the Universe
- Estimated to be about 93 billion light-years across, encompassing all observable matter.
Proponent of Big Bang Theory
- Georges Lemaître is credited with proposing the Big Bang Theory in the 1920s, building on ideas from Albert Einstein’s General Relativity.
Accelerating Expansion Theory
- Dark Energy Theory suggests the universe is expanding at an accelerated rate, attributed to the influence of dark energy, which constitutes about 68% of the universe.
Fate of the Universe Theories
- Big Crunch Theory posits that the universe could eventually stop expanding and collapse back into a singularity, contrasting the Big Bang.
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