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What force is responsible for the accelerated expansion of the Universe?
- a)Gravitational pull of matter
- b)Dark energy
- c)Electromagnetic force
- d)Nuclear force
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
What force is responsible for the accelerated expansion of the Univers...
Understanding the Accelerated Expansion of the Universe
The accelerated expansion of the universe is primarily driven by a mysterious force known as dark energy.
What is Dark Energy?
- Dark energy is a form of energy that permeates all of space and tends to accelerate the expansion of the universe.
- It constitutes about 68% of the total energy density of the universe, making it a dominant component in cosmic dynamics.
Evidence for Dark Energy
- Observations from distant supernovae have shown that the universe is not just expanding, but the rate of expansion is increasing over time.
- The Cosmic Microwave Background radiation and large-scale structure observations further support the existence of dark energy.
Contrast with Other Forces
- Gravitational Pull of Matter: While gravity pulls matter together, it cannot explain the observed acceleration; instead, it would slow down the expansion.
- Electromagnetic Force: This force acts on charged particles and does not play a significant role in cosmic scales.
- Nuclear Force: Relevant at subatomic levels, it does not influence the large-scale structure of the universe.
Conclusion
The concept of dark energy reshapes our understanding of cosmology, suggesting that the universe's fate is tied to this enigmatic force. Its effects are profound, influencing the ultimate fate of the universe and challenging our understanding of physics.
The accelerated expansion of the universe is primarily driven by a mysterious force known as dark energy.
What is Dark Energy?
- Dark energy is a form of energy that permeates all of space and tends to accelerate the expansion of the universe.
- It constitutes about 68% of the total energy density of the universe, making it a dominant component in cosmic dynamics.
Evidence for Dark Energy
- Observations from distant supernovae have shown that the universe is not just expanding, but the rate of expansion is increasing over time.
- The Cosmic Microwave Background radiation and large-scale structure observations further support the existence of dark energy.
Contrast with Other Forces
- Gravitational Pull of Matter: While gravity pulls matter together, it cannot explain the observed acceleration; instead, it would slow down the expansion.
- Electromagnetic Force: This force acts on charged particles and does not play a significant role in cosmic scales.
- Nuclear Force: Relevant at subatomic levels, it does not influence the large-scale structure of the universe.
Conclusion
The concept of dark energy reshapes our understanding of cosmology, suggesting that the universe's fate is tied to this enigmatic force. Its effects are profound, influencing the ultimate fate of the universe and challenging our understanding of physics.
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What force is responsible for the accelerated expansion of the Univers...
Dark energy is the force responsible for the accelerated expansion of the Universe.
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What force is responsible for the accelerated expansion of the Universe?a)Gravitational pull of matterb)Dark energyc)Electromagnetic forced)Nuclear forceCorrect answer is option 'B'. Can you explain this answer?
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What force is responsible for the accelerated expansion of the Universe?a)Gravitational pull of matterb)Dark energyc)Electromagnetic forced)Nuclear forceCorrect answer is option 'B'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about What force is responsible for the accelerated expansion of the Universe?a)Gravitational pull of matterb)Dark energyc)Electromagnetic forced)Nuclear forceCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What force is responsible for the accelerated expansion of the Universe?a)Gravitational pull of matterb)Dark energyc)Electromagnetic forced)Nuclear forceCorrect answer is option 'B'. Can you explain this answer?.
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