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Space Exploration News

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astrophysics, cosmology, the universe...

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Aging star's weight loss secret revealed

VY Canis Majoris is a stellar goliath, a red hypergiant, one of the largest known stars in the Milky Way. It is 30-40 times the mass of the Sun and 300 000 times more luminous. In its current state, the star would encompass the orbit of Jupiter, having expanded tremendously as it enters the final stages of its life.

Posted: Nov 25th, 2015

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The hottest white dwarf in the Galaxy

Astronomers have identified the hottest white dwarf ever discovered in our Galaxy. With a temperature of 250,000 degrees Celsius, this dying star at the outskirts of the Milky Way has already even entered its cooling phase.

Posted: Nov 24th, 2015

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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?

Posted: 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'.

Posted: Nov 13th, 2015

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