Most micrometeorites have a size of 0.2-0.3 mm, with some measuring up to 1 mm. Each exquisite piece is exceptionally difficult to find in part due to its size, but also because of the seemingly infinite quantity of natural and human-made dust particles that have a similar appearance to authentic micrometeorites. These terrestrial imposters can easily overwhelm even the most highly-trained stardust hunters.
For over a century, scientists only looked for micrometeorites in exceptionally clean and remote areas, such as the blue ice of Antarctica. Even though Earth Observation Data confirmed that over 100 metric tonnes of micrometeorites enter into the Earth's atmosphere daily, searching for stardust in an urban area was still considered to be a futile task.
Despite these challenges, a small subset of intrepid scientists collected enough micrometeorites from the Antarctic to create a substantial reference catalogue. What they learned was truly extraordinary and their work set the stage for Jon Larsen's groundbreaking discovery of the world's first urban micrometeorite, NMM 1; A barred olivine spherule that was collected in a small town in Norway called Brevik.
Since that day in February 2015 when his discovery was confirmed by Imperial College London, Jon Larsen has collected, identified and analyzed thousands of micrometeorites from around the globe.
Together these intrepid friends developed a photography technique that leverages digital technology to showcase micrometeorites in all their spectacular beauty.
For years our community members have been asking us to help them learn, develop their technique, and bring them along as we collect, identify, analyze, and photograph micrometeorites. One of the greatest thrills we experience in this work is seeing new micrometeorites for the very first time and we can't wait to share these extraordinary moments with you.
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