EAN: 9783319235424

ASTRONOMERS UNIVERSE THE AMAZING UNITY OF THE...

In the first chapters the author describes how our knowledge of the position of Earth in space
and time has developed  thanks to the work of many generations of astronomers and physicists.
He discusses how our position in the Galaxy was discovered  and how in 1929  Hubble uncovered
the fact that the Universe is expanding  leading to the picture of the Big Bang. He then
explains how astronomers have found that the laws of physics that were discovered here on Earth
and in the Solar System (the laws of mechanics  gravity  atomic physics  electromagnetism 
etc.) are valid throughout the Universe. This is illustrated by the fact that all matter in the
Universe consists of atoms of the same chemical elements that we know on Earth. This unity is
all the more surprising when one realizes that in the original Big Bang theory  different parts
of the Universe could never have communicated with each other. It then is a mystery how they
could have shared the same physical laws. This problem was solved by the introduction of the
idea of inflation  a phase of extremely rapid expansion of the Universe during the first
fraction of a second following the Big Bang. The author explains how the unity of the Universe
finds its origin in the Big Bang prior to inflation. The book addresses the many fundamental
questions about the Universe and its contents from the perspective of the Big Bang: the
formation of structure in the Universe  the questions of the mysterious dark matter and dark
energy  the possibilities of other Universes (the Multiverse) and of the existence of
intelligent life elsewhere in the Universe.

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