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Will the Universe expand forever?

Will the universe go on expanding forever and what is the shape of the universe? Read how we are trying to find the answers to these questions.

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Expanding Universe

An animation of the movement of galaxies as the universe expands.

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Hits: 1892

How do we know the Big Bang actually happened?

A great interactive guide looking at where did we come from? how can see the universe expanding? why galaxies look redder than they should? what caused the Big Bang? and more

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Cosmology FAQ

A long lisit of cosmology questions, dealing with subjects such as the Big Bang, dark matter, black holes, the expanding universe.

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Hits: 4910


Friedmann Equation

Alexander Friedmann of Russia is credited with developing a dynamic equation for the expanding universe in the 1910s.

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Cosmological Constant

Einstein proposed a modification of the Friedmann equation which models the expanding universe. He added a term which he called the cosmological constant.

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Hits: 3733

Packing Universes In Spacetime

Every lightcone contains infinitely many nearly complete, mutually exclusive, lightcones. This page looks at the maths of this, and its use as a cosmological model.

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Hits: 2077

The Universe Adventure

This fantastic site deals with cosmology : the study of the structure, history, and fate of the Universe. It's the place to go whether you want to know more about dark matter, how our universe formed ...


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Hits: 8014

Anatomy of a refrigerator

Find out how a fridge works by compressing and expanding a coolant in this interactive.

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Hits: 2215

Geometry of the Universe

What is the shape the universe and what does it mean for how the universe is going to end?

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Hits: 252


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