Nanosatellite to Hunt Exoplanets

Draper Laboratory and MIT have developed a satellite the size of a loaf of bread that will undertake one of the biggest tasks in astronomy: finding Earthlike planets beyond our solar system—or exoplanets—that could support life. It is scheduled to launch in 2012.

The "nanosatellite," called ExoPlanetSat, packs powerful, high-performance optics and new control and stabilization technology in a small package.

While there have been many small satellites, these are typically used to perform simple communication or observation missions. "We are doing something that has not been done before," says Séamus Tuohy, director of space systems at Draper.

ExoPlanetSat will search for planets by measuring the dimming of a star as an orbiting planet passes in front of it, a technique called transit observation.…

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