What are small chunks of iron and rock that travel through space?

Small chunks of iron and rock that travel through space are known as meteoroids. These objects can vary in size from tiny grains to larger boulders and are often remnants from comets, asteroids, or the early solar system. When meteoroids enter Earth's atmosphere and produce a bright streak of light, they are referred to as meteors, and if they survive the descent and land on Earth's surface, they are called meteorites.