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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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Why Does Our Universe Have Three Dimensions?

A brief waltz through string theory to answer the question why our universe has three dimensions

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What Does Dark Energy Mean for the Fate of the Universe?

The future of our universe depends a lot on what dark energy is doing. Read this in-depth article examining what will happen and scientists are doing to try and figure it all out.

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The Electronic Universe

The Electronic Universe contains materials on sciences from all fields, from physics to geology, as well as 'Javalab' - a collection of JAVA physics applets designed for use as a virtual laboratory.

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15 things you didn't know about outer space

15 things you didn't know about outer space

How many galaxies are there in the universe? Nice infographic with some cool facts about our universe, the solar system and outer space.

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Why Does Dark Energy Make the Universe Accelerate?

An explanation on why dark energy is making the universe expand at an accelerating rate.

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Shapley-Curtis Debate (1920) about the scale of the universe.

Essay on the debate about the scale of the Universe with links to other cosmological debates.

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Nicolaus Copernicus

Nicolaus Copernicus (1473 - 1543) provided a model of the universe in which the earth and all the other planets orbit around the sun and the earth acquired a daily rotation, but the sun itself was ...

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