Meteor dusts, also known as cosmic dust, are tiny particles that float through space and occasionally enter Earth's atmosphere, creating streaks of light in the sky called meteors. Synonyms for meteor dusts include stardust, space dust, micrometeoroids, and interstellar dust. These particles are made up of a variety of materials, such as silicates, iron, and carbon, and can range in size from nanometers to millimeters. While most meteor dusts burn up in Earth's atmosphere, some larger particles can make it through and land on the ground, providing scientists with valuable information about the composition of our solar system.