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Invest a night in Vesta

The brightest asteroid visible from Earth prowls across Cetus the Whale this month. Vesta shines at magnitude +6.3, right at the naked eye limit for observers with pristine skies, but easily coaxed into view with any pair ...

dateOct 05, 2015 in Space Exploration
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What are asteroids made of?

What are asteroids made of? Asteroids are made mostly of rock—with some composed of clay and silicate—and different metals, mostly nickel and iron. But other materials have been found in asteroids, as well.

dateSep 14, 2015 in Space Exploration
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What are asteroids?

4.6 billion years ago, our solar system formed from a collection of gas and dust surrounding our nascent sun. While much of the gas and dust in this protoplanetary disk coalesced to form the planets, some of the debris was ...

dateSep 10, 2015 in Space Exploration
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The feasibility of deflecting asteroids

It's the ultimate science fiction: The immense power of the sun is harnessed and converted into a massive phased array of laser beams that have the potential to intercept and deflect asteroids before they smash into Earth.

dateSep 01, 2015 in Space Exploration
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