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Cosmology

Cosmology is the area of physics that studies the universe in and of itself. Through the use of incredible and ingenious methods of experimentation, cosmologists attempt to discover how the universe began, how it is developing, and how or if it will end. Questions regarding the Big Bang, dark matter, dark energy, the cosmic background radiation, and the initial formation of the fundamental particles can be placed into this category.

776 Questions

How much does dark matter cost per 1ml?

It would be quite difficult to put a price on dark matter as of now, because we don't even know what the stuff IS.

What is the temperature of dark matter?

At present we do not know. It might be almost motionless, it might have a high velocity, it might have a velocity near that of light.

These three hypotheses of the nature of dark are called (respectively); cold dark matter, warm dark matter, and hot dark matter.

Why is Dark Matter hard to understand and find?

Dark matter is hard to understand because it does not interact with light, making it invisible and difficult to detect. It does not emit, absorb, or reflect light, and its exact nature remains a mystery. Additionally, dark matter does not cluster in the same way as normal matter, further complicating its detection and study.

Did jj Thomson or ernest Rutherford discover the neutron?

Neither J.J. Thomson nor Ernest Rutherford discovered the neutron. The neutron was discovered by James Chadwick in 1932 through experiments involving the interactions of neutrons with other atomic particles.

Why is the big bang theory not an accurate name for what happened?

Like any other theory, the Big Bang theory

-- does a good job (though not perfect) of explaining a lot of things that are observed now. Like the fact that the universe is expanding.

-- leads to some predictions that are confirmed by observations designed to test them. Like the fact that the movements of galaxies is affected by redshift, which is only possible if we are moving away from them or they are moving away from us.

-- can never be proven. But it can be disproven in a second if the right evidence against it is observed. What science gives and logical thought gives us, they can take away.

Are God and Dark Matter one and the same?

Not only have we no shred of an answer to that one presently,

we're not likely to ever have one in the future.

Another view: Dark matter permeates our universe, interacting only very weakly with ordinary matter. It was produced, presumably, at the big bang event and only interacts with us through the gravitational force. God, if He exists, has very little indeed in common with dark matter.

What is the theory for finite energy?

The energy of the universe is finite. It can neither be created nor destroyed. It can only change form. It is related to the concept of conservation of mass by Einstein's famous formula E=mc2 - in other words, the combined mass and energy of the universe is constant.

What force exerted the matter after the big bang?

After the Big Bang, it was the force of gravity that exerted the most influence on matter. Gravity acted to pull matter together, leading to the formation of galaxies, stars, and other cosmic structures. Other forces such as electromagnetism and the strong and weak nuclear forces also played important roles in shaping the universe.

What is the number of neutrons in one atom of carbon?

In Carbon-12, the most abundant form of Carbon, there are 6 Neutrons, 6 Protons and 6 Electrons.

In Carbon-14, the radioactive isotope of Carbon used in Carbon Dating, has 6 Protons, 8 Neutrons and 6 Electrons.

Why was the cosmic background radition an important discovery?

The cosmic background radiation was an important discovery because it provided strong evidence for the Big Bang theory of the origin of the universe. It is a remnant of the early stages of the universe, and studying it has helped scientists understand the composition and evolution of the cosmos.

How to study the dark region of universe?

The only way we can study distant parts of the universe is through photons emitted from those regions.

By definition, if it is "dark" then we cannot study it. W can only study its interactions with light that we can see.

Can a quasar obliterate an entire planet?

No, a quasar is a distant celestial object that emits intense amounts of energy. While a quasar can release powerful radiation and energy into space, it cannot directly obliterate an entire planet in the way a weapon might. The impact of a quasar on a planet would depend on factors such as distance and the planet's atmosphere.

What were epicycles used to describe?

Epicycles were used in ancient astronomy to explain planetary motion within a geocentric model. They involved the idea of planets moving in small circles (epicycles) while also moving along a larger path around the Earth.

Why was it difficult for ancient astronomers to explain about the apparent retrograde motion?

If, as ancient astronomers thought, that our Earth was the center point of rotation for other planets, then it is difficult to explain why those planets would move in a direction opposite to their rotation. Ptolemy came up with a solution that worked, but it was a cumbersome one. Nicolae Copernicus was able to show that this retrograde motion could be explained easily if it were assumed that our Sun was the actual center of rotation of the planets.

Why does cosmology model require so much power?

Cosmology modeling requires a lot of power because it deals with vast amounts of data, complex mathematical calculations, and simulations of the entire universe. These computations require high-performance computers to accurately model phenomena such as the Big Bang, dark matter, and dark energy. The calculations involved in cosmology models are resource-intensive and require substantial computational power to handle the massive scale of the universe.

How does the composition of a star differ from the composition of a planet?

The composition of Our Gas Giants may resemble that of Our Sun, yet they have not the Power Of Ignition!

The rocky composition of the inner planets bears no resemblance at all.

Stars are mostly Hydrogen. the core of stars is under so much pressure that the Hydrogen undergoes fusion into Heliun and a few heavier elements. Planets are too small for this to happen.

Is the cosmological argument valid?

The cosmological argument is a metaphysical argument for the existence of a first cause or necessary being that initiated the existence of the universe. Its validity depends on one's philosophical perspective and interpretation of causality and existence. Some find it compelling, while others criticize its assumptions and conclusions.

Where does the first neutron come from to initate the fission reaction?

Nuclei of U-235 (and other elements) spontaneously emit neutrons. Most of them are too fast to be absorbed by other U-235 nuclei, so it is usually best to slow them down. This is usually done with water, sometimes with "heavy" water.

What are the currents theories of Cosmology?

Current theories of cosmology include the Big Bang theory, which posits that the universe began as a singularity and has been expanding ever since; the inflationary theory, which suggests that the universe underwent a rapid expansion in its early stages; and the concept of dark matter and dark energy, which are thought to make up the majority of the universe's mass and energy. These theories, along with ongoing research and observations, shape our understanding of the origins and evolution of the universe.

Are gamma rays stronger than cosmic ray?

Gamma rays are a form of electromagnetic radiation, and they are the highest frequency form of that type of energy. They can be said to vibrate fastest. But cosmic rays are mostly protons, which are a form of particulate radiation. Comparing gamma rays to cosmic rays as regards frequency is not something we do.

Where can you buy big bang Pegasus?

Big Bang Pegasus is a Beyblade, typically available for purchase from online retailers such as Amazon or eBay, as well as specialty toy stores or hobby shops. Be sure to check for authenticity and seller credibility when making your purchase.

Where is the closest wormhole to Earth?

There are currently no known or proven wormholes near Earth. Wormholes are theoretical passages through spacetime that could potentially connect two distant points, but there is no empirical evidence of their existence or proximity to Earth.

What type of creature can be found during a full moon?

Werewolves are commonly associated with full moons in various folklore and popular culture, where they transform from a human into a wolf-like creature. This transformation is said to be triggered by the full moon's influence on their behavior.

Does dark energy affect the size of a universe?

Dark energy is thought to be the dominant force driving the accelerated expansion of the universe. Therefore, it does affect the size of the universe by causing it to expand at an accelerating rate. This expansion is causing galaxies to move away from each other at increasing speeds.

Did the big bang create earth?

Not directly; sincethe big bang occurred 13.7 billion years ago, as an evolutionary expansion of space-time marking the beginning of the universe, there would not have been aggregate matter upon this initial event. Fundamental particles formed, and then atoms (mainly hydrogen and helium). These gaseous elements underwent fusion (nucleosynthesis) in stars for billions of years before Earth formed. Earth is a rocky planet, full of heavy elements that could only form from the heat of supernovae (exploding giant stars). Since Earth is a rocky, heavy-element planet like this, it required the existence of the heavy elements before it could form. Earth eventually formed in the solar system of a second generation star (the Sun) 4.56 billion years ago. So no, the Big Bang did not directly form the Earth, nor any other planet for that matter. It may be correcter to say the Big Bang produced the earliest fundamental particles, but I prefer to understand the Big Bang as an expansion of space-time not necessarily directly having to do with the formation of matter (fundamental particles).