Earth's Iron Building Blocks - Universe Today
The iron meteorites whizzing around the Solar System are probably remnants of objects that helped form the Earth and the other rocky planets. When they fall down to Earth, scientists get an opportunity to study some of the primordial building blocks of our planet. Although many of the Solar System's asteroids are found in the asteroid belt, they probably emerged out of the same disk of planetary debris that formed the Earth, and then drifted out to their current location.