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B.4.1. Samples of stardust

Samples of stardust

Samples of stardust

  • Exhibition Text

    • As stars age, they spew out great quantities of dust grains into interstellar space. Early in our solar system's history, dust that formed around stars older than the Sun reached the solar nebula and mixed with chondrules, calcium-aluminum inclusions (CAIs) and dust particles from our solar system.
      Today, small amounts of this stardust, known as presolar grains, can be found in some meteorites. The Allende meteorite contains many types of presolar grains, including tiny diamonds that consist of only about 1,000 carbon atoms. This vial contains about 60 quintillion (6 followed by 16 zeros) of these "nanodiamonds," isolated from a fragment of Allende similar in size to the 5.7-gram (0.013-pound) piece displayed here.

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  • For Educators

    • Topic: Astronomy

      Subtopic: Stars

      Keywords: Astromineralogy, Astrophysics, Chondrules, Cosmic dust, Diamonds, Interstellar matter, Meteorites, Stars--Evolution

      Audience: General

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