A 1.5 mm long impact track of a meteoroid captured in aerogel exposed to space by the <a href="https://en.wikipedia.org/wiki/European_Retrievable_Carrier" class="extiw" title="w:European Retrievable Carrier">European Retrievable Carrier</a> (EURECA) spacecraft launched by <a href="https://en.wikipedia.org/wiki/STS-46" class="extiw" title="w:STS-46">STS-46</a> and recovered by <a href="https://en.wikipedia.org/wiki/STS-57" class="extiw" title="w:STS-57">STS-57</a>. The wide end (open end) of the "carrot" is the location of hypervelocity entry into the 0.05 g/cc aerogel. As the particle is slowed by the aerogel the track narrows to a point. The 10 micron projectile is seen at the tip of the "carrot". See <a rel="nofollow" class="external free" href="http://stardust.jpl.nasa.gov/science/sd-particle.html">http://stardust.jpl.nasa.gov/science/sd-particle.html</a>.
NASA/ESA
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