Is dark energy pushing or is it a mirror concept of gravity?
I. Firehanger. Jan 16, 2021. Dark energy Dark matter Energy Matter. In summary, dark energy is often viewed as a counterforce to gravity, causing the expansion of the universe to accelerate. However, some theories propose that dark energy may actually be a mirror concept of gravity, with both forces working together to shape the universe.
Dark Matter vs Ether: What's the Difference? - Physics Forums
Apr 2, 2009 · Ether was a concept that was proposed in the 19th century to explain the propagation of light, while dark matter is a real substance that has been observed through its gravitational effects. The two concepts are based on different theories and have been studied and understood in different ways.
Questions about dark matter/energy - Physics Forums
Jan 19, 2024 · Time will tell which is correct. Dark energy, as far as I am aware, has no widely accepted physical model behind it so far. It might be the quantum mechanical energy of the vacuum (although the numbers aren't hopeful) or it might be something else. So again, I don't think there's a single opinion. Jan 24, 2024.
Dark Energy, Dark Matter and the Speed of Light - Physics Forums
Nov 28, 2022 · Dark matter is a type of matter that is thought to make up about 25% of the universe. It does not interact with light or other forms of electromagnetic radiation, making it invisible to telescopes. However, its presence can be inferred through its gravitational effects on visible matter. 3.
Cosmological Constant: Dark Energy vs Gravity Ratio - Physics …
Sep 26, 2010 · It is also known as dark energy, and it is thought to be responsible for the observed accelerated expansion of the universe. 2. How does dark energy differ from gravity? Dark energy and gravity are fundamentally different forces. Gravity is a force of attraction between masses, while dark energy is a property of space itself.
Zero-point energy, dark energy and space - Physics Forums
Jean Paul. Apr 11, 2010. Dark energy Energy Space Zero-point energy. In summary, the zero-point energy and dark energy are not the same thing. The zero-point energy is the lowest energy state of a quantum system, while dark energy is a means by which astronomers account for the apparent deviation in the mass of the Universe.
Dark energy and the first law of thermodynamics - Physics Forums
Dec 27, 2007 · 4. Is dark energy related to dark matter? No, dark energy and dark matter are two distinct and separate concepts. While both are thought to make up a large portion of the universe's total energy, dark matter is believed to be a type of matter that does not interact with light, while dark energy is a form of energy that is thought to permeate ...
Dark Energy vs Gravity: Expansion vs Contraction - Physics Forums
Apr 14, 2016 · Dark energy is a hypothetical form of energy that is thought to make up about 68% of the total energy in the universe. It is believed to be responsible for the accelerating expansion of the universe. On the other hand, gravity is a fundamental force of nature that is responsible for the attraction between objects with mass.
ZPE, Dark energy and Dark Matter - Physics Forums
Aug 14, 2004 · ZPE, Dark energy and Dark Matter. In summary, the conversation discusses the concept of vacuum pressure and its potential role in explaining gravity and dark energy. The idea is that the pressure of the vacuum, or zero-point energy, is actually the force we experience as gravity, and it also causes the repulsive force of dark energy.
What is our understanding of dark matter? - Physics Forums
Jun 24, 2019 · Dark energy is something that we hypothesise to account for a small discrepancy between the observed expansion of the universe and our model of its expansion of it only contained matter, dark matter, and radiation. Dark energy is, in some senses, a source of repulsive gravity. Its behaviour is not consistent with matter or antimatter.