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Atom & Cosmos

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Asteroid hurtling toward Earth

INCOMING  Water vapor can be trapped in glass and melted rocks that are created by an asteroid impact. The finding boosts the idea that asteroids brought water to the early Earth.

Uranus

TAKE A WHIFF  Uranus is a lovely robin’s egg blue in this image taken by the Voyager 2 spacecraft when it flew past in 1986. New measurements of the planet’s chemistry suggests it may smell like eggs, too — that is, really rotten eggs. 

SHOWING THEIR YEARS  Flat spiral galaxies like NGC 1055 (left) have more ordered and younger stars than blobby, spherical galaxies like IC 2006 (right), a new survey shows. 

Atom & Cosmos

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