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The five most Earth-like exoplanets (so far)

With nearly 2000 exoplanets found to date, it is no wonder so many of them will resemble our planet in some way. But which exoplanets are similar enough to the Earth that they could actually be habitable?

Nov 18th, 2015

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How to clean up space debris using game theory

The dilemma of whether to accept the cost of acting or risk disaster by waiting is the kind of strategic problem studied by game theory. A situation like the space debris problem, where players act just for their own benefit instead of taking group interests into account, is referred to in game theory as the 'tragedy of the commons'.

Nov 13th, 2015

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Close-up view of galaxies prompts re-think on star formation

Astronomers have identified for the first time one of the key components of many stars, a study suggests. A type of gas found in the voids between galaxies - known as atomic gas - appears to be part of the star formation process under certain conditions, researchers say.

Nov 10th, 2015

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Physicists find clue to formation of magnetic fields around stars and galaxies

An enduring astronomical mystery is how stars and galaxies acquire their magnetic fields. Physicists now have found a clue to the answer in the collective behavior of small magnetic disturbances. They report that small magnetic perturbations can combine to form large-scale magnetic fields just like those found throughout the universe.

Nov 9th, 2015

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