Each particle is about 300 microns wide, roughly the width of a human hair. To capture tiny details, Larsen and colleague Jan Kihle shoot with varied focal lengths, taking one photo per micron. Software combines the images.
How Small?
Each particle is about 300 microns wide, roughly the width of a human hair. To capture tiny details, Larsen and colleague Jan Kihle shoot with varied focal lengths, taking one photo per micron. Software combines the images.
The Man Finding Stardust on Earth
Until recently, experts thought it was impossible to collect cosmic dust in places inhabited by humans.
This story appears in the August 2017 issue of National Geographic magazine.
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