Is Dark ENERGY made of PARTICLES? The Quintessence of physics!
Arvin Ash・2 minutes read
Astronomers discovered dark energy in 1998, accelerating universal expansion, while dark matter affects galaxies through gravity. Albert Einstein's cosmological constant explains the universe's expanding nature, with potential variations over time leading to the "Big Rip" scenario billions of years ahead.
Insights
- Dark energy, distinct from dark matter, is a mysterious force that makes up 68.5% of the universe's energy and accelerates the universal expansion, counteracting gravity with a repulsive force.
- The concept of the cosmological constant, represented by lambda, was introduced by Albert Einstein to maintain a static universe but later explained the universe's expanding nature, with recent theories suggesting that dark energy, represented by lambda, may not be constant, potentially leading to dynamical dark energy theories where its value changes over time and space.
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Recent questions
What is dark energy?
A mysterious force accelerating universal expansion.
How is dark matter different from dark energy?
Dark matter inferred from gravitational effects, dark energy accelerates expansion.
What is the cosmological constant?
A repulsive force explaining universal expansion.
What is the "Big Rip" scenario?
Dark energy tearing apart the universe in the future.
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