UNIVERSE

SPACE : THE UNFOLD UNIVERSE


The universe is the entirety of space and time, all matter and energy, and the physical laws and constants that govern them. It is often defined as everything that exists, including all galaxies, stars, planets, and other bodies, as well as all forms of energy and matter. The origins and ultimate fate of the universe are still a subject of ongoing research and debate in cosmology.

The meaning of the word "universe" is often used to refer to the physical universe, which is all of the matter, energy, space, and time that exist and can be observed or measured. It is also often used more broadly to refer to everything that exists, including all of physical reality, as well as any hypothetical or unprovable realms, such as spiritual or supernatural realms. In this sense, the term "universe" can be used to describe the entirety of all that exists, both known and unknown.

The universe is everything that exists, including all matter and energy, all galaxies, stars, planets, and other forms of matter and energy. It is vast and expansive, with an estimated age of 13.8 billion years. The universe is made up of billions of galaxies, each containing billions of stars and planetary systems. The most widely accepted scientific explanation for the origin of the universe is the Big Bang theory, which states that the universe began as a singularity and has been expanding ever since.

The universe is also home to an array of fascinating phenomena, including black holes, neutron stars, and quasars.
Neutron stars are incredibly dense, collapsed stars that are only a few kilometers across but have masses greater than the sun. Quasars are extremely bright objects located at the centers of distant galaxies.

In recent years, scientists have discovered the existence of dark matter and dark energy, which make up most of the universe. Dark matter is thought to be a type of matter that does not emit, absorb or reflect light, and it is believed to make up about 85% of the universe's mass. Dark energy is thought to be a form of energy that is causing the universe to expand at an accelerating rate.

The universe is a mysterious and endlessly fascinating place, and scientists continue to make new discoveries about its nature and origins.

HOW BIG THE UNIVERSE IS?

The size of the observable universe is estimated to be around 93 billion light years in diameter. This means that if we could see the entire observable universe, we would be able to see objects that are 93 billion years away from us in every direction. However, it is important to note that this is only the observable universe, and that the universe as a whole may be much larger. The size of the entire universe is not currently known, and is still a topic of ongoing research and debate in cosmology.
This estimate is based on the cosmic microwave background radiation, which is a faint glow of light that is thought to be the afterglow of the Big Bang, the event that is believed to have marked the beginning of the universe as we know it. The cosmic microwave background radiation is nearly the same temperature in every direction, it tells us that the universe is isotropic, homogeneous, and that the Big Bang happened almost simultaneously everywhere. However, it is important to note that the observable universe is not the whole universe and that the universe as a whole may be much larger.

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Want to see article about BIG BANG (formation of universe)?  Will Publish separate Blog on big bang theory.

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