the universe

Ramon Liranzo    earth science      period 4

The Universe is commonly defined as the totality of existence,including planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy.Similar terms include the cosmos, the world, reality, and nature.

how was the universe created?

After decades of observing and thinking, we have come to answer confidently the question of the origin of our universe... with what is known as the "big bang". you guys must be like whats the big bang. well According to the big bang theory, the universe began by expanding from an infinitesimal volume with extremely high density and temperature. The universe was initially significantly smaller than even a pore on your skin. With the big bang, the fabric of space itself began expanding like the surface of an inflating balloon – matter simply rode along the stretching space like dust on the balloon's surface. The big bang is not like an explosion of matter in otherwise empty space; rather, space itself began with the big bang and carried matter with it as it expanded. Physicists think that even time began with the big bang. Today, just about every scientist believes in the big bang model. The evidence is overwhelming enough that in 1951, the Catholic Church officially pronounced the big bang model to be in accordance with the Bible.

what is the age of the universe?

In physical cosmology, the age of the universe is the time elapsed since the Big Bang. The best measurement of the age of the universe is 13.798±0.037 billion years within the Lambda-CDM concordance model.

what is the universe structure?

The observable universe consists of the galaxies and other matter that can, in principle, be observed from Earth in the present day because light and other signals from those objects has had time to reach the Earth since the beginning of the cosmological expansion.

what is the universe composition

So, apparently, there is mass that we can see and mass that we can't. There is also energy (light) that we can measure and energy that we can't.

whats in the universe?

Atoms are made of electrons, protons and neutrons, which are made of more fundamental particles. In my model, the most fundamental particles are made of orbiting pairs of ethereal shear waves. These are transverse wave disturbances of the ether, which move at the speed of light, even when orbiting one another. The ether has the texture of a foam.

how many stars does the universe has?

Dr. Carl Sagan used to say there are, "Billions and billions". Johnny Carson used to spoof Dr. Sagan in a skit on the Tonight Show and often used that as his catch line.

Apparently there are more stars in the universe than there are grains of sand on every beach in the world. The size of the universe is impossible to get your head round

whats the biggest star?

This red supergiant star has a radius of 950-1200 times the size of the Sun, and would engulf the orbit of Jupiter if placed in our Solar System. But that's nothing. The largest known star is VY Canis Majoris; a red hyper giant star in the Canis Major constellation, located about 5,000 light-years from Earth.

what is holding the universe?

Dark matter - the mysterious substance thought to 'glue' the universe together - might not exist, throwing current theories of the universe into chaos.

'Dark matter' is thought to make up around 83% of the universe by mass. and to 'hold together' galaxies - but a scan of 400 stars near our Sun found no trace of it.

is the universe expanding or shrinking?

The American astronomer Edwin Hubble made the observations in 1925 and was the first to prove that the universe is expanding. He proved that there is a direct relationship between the speeds of distant galaxies and their distances from Earth.

can people see the whole universe?

e see the "edge" of space-time, a construct that results form the finite (and relatively slow) speed of light. As we look far in distance, we are also looking back in time. When we look at a star at 10 light-years, we see it as it was 10 years ago. When we look at a galaxy 1 billion light-years away, we see it as it was a billion years ago.What we do notice is that when we look at things that are far away (and, therefore, "far" in the past), the universe was different: it was hotter and denser.

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