Seven tiny grains captured by Stardust are likely visitors from interstellar space

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NASA’s Stardust spacecraft, which collected comet and interstellar dust in 2004 and later delivered the tennis-racket shaped dust collectors to Earth via parachute. Courtesy NASA.

Since 2006, when NASA’s Stardust spacecraft delivered its aerogel and aluminum foil dust collectors back to Earth, a team of scientists has combed through the collectors in search of rare, microscopic particles of interstellar dust.

The team now reports that they have found seven dust motes that probably came from outside our solar system, perhaps created in a supernova explosion millions of years ago and altered by eons of exposure to the extremes of space. They would be the first confirmed samples of contemporary interstellar dust.

The complete article can be found at the UC Berkeley News Center, as posted by Robert Sanders, August 14, 2014.