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Questions and Answers
Who developed the heliocentric model with the Sun at the center of the Solar System?
Who developed the heliocentric model with the Sun at the center of the Solar System?
- Johannes Kepler
- Nicolaus Copernicus (correct)
- Galileo Galilei
- Isaac Newton
What is the approximate diameter of the observable universe at the present day?
What is the approximate diameter of the observable universe at the present day?
- 120 billion light-years
- 100 billion light-years
- 93 billion light-years (correct)
- 85 billion light-years
When did space and time emerge together according to the Big Bang theory?
When did space and time emerge together according to the Big Bang theory?
- 10 billion years ago
- 13.787 billion years ago (correct)
- 15 billion years ago
- 20 billion years ago
What is the prevailing cosmological description of the development of the universe?
What is the prevailing cosmological description of the development of the universe?
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Who developed the law of universal gravitation?
Who developed the law of universal gravitation?
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Study Notes
Heliocentric Model and the Solar System
- Nicolaus Copernicus developed the heliocentric model, placing the Sun at the center of the Solar System.
Size of the Observable Universe
- The approximate diameter of the observable universe at the present day is approximately 93 billion light-years.
The Big Bang Theory
- According to the Big Bang theory, space and time emerged together around 13.8 billion years ago.
Cosmological Description of the Universe
- The prevailing cosmological description of the development of the universe is the Big Bang theory.
Law of Universal Gravitation
- Sir Isaac Newton developed the law of universal gravitation.
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