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This week in pictures: October 13–19, 2012

In the past seven days, scientists found a planet in the star system nearest to Earth, analysis from a martian rock touched by Curiosity showed that it resembles some unusual rocks from Earth's interior, astronomers were able to study a dark matter filament in 3-D for the first time, and more.

Illustration by ESO/L. Calçada/N. Risinger

Planet found in nearest star system to Earth

The observations extended over more than four years using the HARPS instrument and have revealed a tiny signal from a planet orbiting Alpha Centauri B every 3.2 days. Learn more »
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