Meet NMM 500, Jon Larsen’s first giant

Micrometeorites are exceptionally small pieces of cosmic dust that have landed on a planet. These magnificently beautiful particles can be classified into different types based on their composition. Another way to differentiate between different micrometeorites is by size. Some particles are so tiny that powerful microscopes struggle to make out their details. Others, however are very large; These are the giants.

In this post, I’m delighted to present the first giant micrometeorite I ever found, NMM 500.

This wonderful barred olivine (BO) type micrometeorite measures just over 0.5 mm. It has no visible metal and very few small magnetite “Christmas tree” crystals on the surface. Perhaps its parent body in space was low on iron? This large aerodynamic particle is oriented (front is pictured up) and shows no signs of weathering. Its pristine state indicates it was fresh as a daisy when it was found in the rain gutter of Nesodden Skole, Akershus, Norway, in December 2015.

At that time it was still very controversial to suggest it was possible to identify micrometeorites by visual appearance alone. While the value of analysis cannot be understated, the idea that analysis was the only method of confirmation has since been dismissed, largely due to my work.

I hope you enjoyed learning about NMM 500! To this day, my first giant remains one of my favorites.

Please stay come say “Hallo!” on Facebook, Instagram, and Twitter to keep up with my current micrometeorite adventures!

Yours truly,

Jon Larsen

Just in case you're new here!

Together we have amassed the world's most expansive collection of micrometeorites and we can't wait to share it with you.

Whether you're an expert in the field, an art collector with an appetite for treasures from space, or a budding stardust enthusiast, we hope you'll enjoy learning about our work.

Connect with us on social media to share the excitement of seeing new micrometeorites for the first time!

Jon Larsen & Jan Braly Kihle

We're so glad you're here!



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