Voyager, at the edge of the solar system, completes first maneuver in 21 years.

via jpl.nasa.gov

PASADENA, Calif. -- What happens at the boundary where the solar system meets interstellar space? The answer, scientists know, is blowing in the solar wind. It's just a matter of getting NASA's Voyager 1 spacecraft in the right orientation to detect it.

To enable Voyager 1's Low Energy Charged Particle instrument to gather these data, the spacecraft performed a maneuver on March 7 that it hadn't done for 21 years...

http://www.jpl.nasa.gov/news/news.cfm?release=2011-069

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