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What is the Universe made of?

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What is the Universe made of? The Universe is made up almost entirely of hydrogen and helium. These are the two lightest elements.
All the rest of the matter in the Universe is very rare. Elements such as silicon, carbon and others are concentrated into clouds, stars and planets.

The Universe is held together by four invisible forces. Gravity and electromagnetism are the two familiar forces. The other two kinds are strong and weak nuclear forces.

These operate only inside the incredibly tiny nuclei of atoms, holding the tiny particles together.

How old is the Universe?

It is possible to calculate the approximate age of the Universe by looking at how fast distant galaxies are moving away from us.

However, it is not possible for us to make this calculation accurately. Scientists have estimated that the Universe is about 13,000 million years old. AII of the matter in the Universe is flying out at enormous speed from the central point where the Big Bang took place.

Tags: universe, hydrogen

Category: Astrology  - ( Astrology Archive)

Date Added: 09 December '11

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