A potentially habitable alien planet has been found orbiting a nearby star
Earth's flora is responsible for the glaciers and rivers that have created this planet's distinctive landscape
Kepler telescope discovers miniature extrasolar planetary system
The ubiquity of extrasolar planets, and of relatively small worlds in particular, bodes well for searches for life-friendly Earth twins
NASA's planet-hunting observatory claims its smallest two finds yet, but neither looks hospitable to life
NASA has launched its next Mars rover, known as Curiosity
The rover formerly known as the Mars Science Laboratory should tackle some of the biggest questions about Mars—assuming it can survive an elaborate touchdown
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