Teori relativitas umum Einstein menyiratkan bahwa alam semesta harus punya permulaan dan, mungkin akhir.

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contains on average some one hundred billion stars. If a star were a grain of salt, you could fit all the stars visible to the naked eye on a teaspoon, but all the stars in the universe would fill a ball more than eight miles wide.

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I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.

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Estoy convencido de que los humanos necesitamos dejar la Tierra para evitar correr el riesgo de ser aniquilados.

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The wise never marry, and when they marry they become otherwise.

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It is like a drinking straw. The surface of a straw is two-dimensional. However, one direction is curled up into a small circle, so that from a distance the straw looks like a one-dimensional line.

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This means that at earlier times objects would have been closer together. In fact, it seemed that there was a time, about ten or twenty thousand million years ago, when they were all at exactly the same place and when, therefore, the density of the universe was infinite.

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Nothing cannot exist forever.

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[If] there were such a God, I would like to ask however did he think of anything as complicated as M-theory in eleven dimensions.

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We spend a great deal of time studying history, which, let’s face it, is mostly the history of stupidity. So

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