Did you know that tons of space dust land on Earth every day? Much of this material formed with the solar system billions of years ago. Tiny particles called micrometeorites sit in ordinary outdoor dust. Spread a large white sheet outside on a sunny day and let dust collect on it. After some time, gather the material into the center. You can also brush dust from windowsills or plant leaves into a container. Pass a magnet underneath the collected dust to separate magnetic particles. Tilt the surface gently to remove everything else. Then inspect what remains under a magnifying glass or microscope. Look for dark, round particles with pitted surfaces. Those are micrometeorites.