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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.
An animation of the movement of galaxies as the universe expands.
A long lisit of cosmology questions, dealing with subjects such as the Big Bang, dark matter, black holes, the expanding universe.
Alexander Friedmann of Russia is credited with developing a dynamic equation for the expanding universe in the 1910s.
Einstein proposed a modification of the Friedmann equation which models the expanding universe. He added a term which he called the cosmological constant.
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.
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 ...
Find out how a fridge works by compressing and expanding a coolant in this interactive.
Stephen Hawking's Universe: explains some of the most important ideas and developments in human understanding of the universe. The Web pages include original essays in cosmology, original ...
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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