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How Big is the Universe

A simple article from NASA which tries to show how big the Universe is and how long it would take to travel between stars!

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Secrets of the early universe

Read how satellite observations of cosmic microwave background can tell us a lot about how the universe formed.

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The Scale of the Universe

This interactive page allows you to explore the universe and how we measure size, from the incredibly small to the incomprehensibly big.

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Hits: 4443

Sizing up the Universe

Cool interactive where you compare objects in the universe to common items like cookies, beach balls and Brussels sprouts.

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Cool Cosmos - Revealing the Universe in All of its Light!

Wonderful resource about observing the universe through radio,infra-red, visible, ultra-violet and gamma-rays.

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The Elemental Composition of the Universe

What is our universe made of, and why?

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Is The Universe Closed?

Does the theory of relativity imply a closed finite universe? This site tries to explain the theories. Very text heavy!

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Uranium reveals the age of the universe

An article from Physicsworld: Astronomers have spotted for the first time the fingerprint of uranium-138 in an ancient star - and have used it to make the most reliable guess yet of the age of the ...

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Multiwavelength Universe: Online Activity

Test your knowledge of how the universe looks in different wavelengths in this online game.

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New View of Primordial Universe Confirms Sudden "Inflation" after Big Bang

New evidence for inflation, a period of rapid expansion after the start of the universe, has been found in the cosmic microwave background.

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