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Like sex, Stephen Hawking was and is mainly a cheap way to obtain publicity. They still publish...

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Relativity is a form of symmetry and for that reason already of fundamental importance for science...

Energy Is Not A Substance And How To Easily Understand This

Energy is not a substance, not something in the sense of “some thing”. Energy often appears...

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Sascha VongehrRSS Feed of this column.

Dr. Sascha Vongehr [风洒沙], physicist and philosopher, studied phil/math/chem/phys in Germany, obtained a BSc in theoretical physics (electro-mag) & MSc (stringtheory) at Sussex University... Read More »

Welcome to my first blog entry ever! That the Big Bang is the start of the universe, the mysterious “point of creation”, is stated often still today, even by prominent physicists. It is also not true.

The Big Bang is what you get when you back-extrapolate the today visible expansion of the universe into the past. One gets to the point where there is the so called “reheating” after inflation. The result of reheating is the Big Bang, a hot and dense state for sure, but it is not thought to be the beginning anymore.

The Big Bang is a set of conditions of an extremely hot, dense, expanding Universe that exists after the end of inflation.