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"expanding universe", type: Website
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A simple article from NASA which tries to show how big the Universe is and how long it would take to travel between stars!
Read how satellite observations of cosmic microwave background can tell us a lot about how the universe formed.
This interactive page allows you to explore the universe and how we measure size, from the incredibly small to the incomprehensibly big.
An animated guide to the origin of the universe from the BBC.
Cool interactive where you compare objects in the universe to common items like cookies, beach balls and Brussels sprouts.
Wonderful resource about observing the universe through radio,infra-red, visible, ultra-violet and gamma-rays.
What is our universe made of, and why?
Does the theory of relativity imply a closed finite universe? This site tries to explain the theories. Very text heavy!
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 ...
Test your knowledge of how the universe looks in different wavelengths in this online game.
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