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The Origin of Ancient Water

Perhaps half the water we drink predates the solar system itself

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MAGAZINE HIGHLIGHTS

openerillusc

Hunting for Phantom Worlds

Many astronomers are looking for livable, Earth-like planets. Alexander Wolszczan studies the wounded survivors of stellar suicides.
curiosity

Alien Protection Plan

It's natural to worry about contamination from aliens, but who worries about sheltering them from us?
deep-space-network

A Skype Session From Mars

NASA's Deep Space Network will need an upgrade before colonists on the Red Planet can use it to phone home.
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