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It is quite clear, from observations, that the Universe is expanding, and that it started from a very hot and very dense start, currently called the "Big Bang". It is not quite clear where the energy came from; there are several speculations about this, but there is not much evidence about what happened before the Big Bang - or whether there even was a "before".

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Q: Why is the Big Bang Theory still logical If energy cant be created or destroyed?
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What is the total amount of energy in the universe never changes called?

You are thinking of the conservation of energy law which states energy can neither ber created or destroyed.


Where do shinigami go when they die?

forever, when they are killed they reincarnate into the human world with no memories of their past life.


Scientists classify everything in the universe as?

If they are astronomers, they classify everything as 'interesting'. I think the answer may be something like "matter or energy". In fact, according to Relativity Theory, mass (of matter) and energy are in many ways equivalent. "Mass-energy" is a term often used to refer to this fact. Pretty well everything in the Universe is matter or energy,


What are the similarities between gas and solid?

They are states of matter. They follow the kinetic theory of matter. They possess potential energy. They are made of particles, etc. etc.


What theory explains that universe began in a violent explosion?

The big bang theory does not actually begin with a "violent explosion." Instead, there was neither medium, light, nor sound in the initial moments. Instead, there was just a rapidly expanding ripple of rapidly cooling energy contained within a bubble of space-time. Eventually matter synthesized from this energy, crystallizing into hydrogen gas through which electromagnetic radiation could permeate. This radiation has been detected as the cosmic microwave background, or CMB. About that time the universe would have rung like a bell as sound energy would have propagated through it. We have detected sound waves bleeding energy off stars within sufficiently dense nebular, so we know this phenomenon is real, and interesting.