SCIENCE A 4.565-billion-year-old space rock hints at the way Earth and other rocky planets took shape. (Phys.org) What is a meteorite? Use our introductory reference to learn more. Teachers, scroll down for a quick list of key resources in our Teachers Toolkit. Discussion Ideas NWA 11119 is the oldest igneous meteorite yet dated. What does NWA stand for? Northwest Africa. The space rock was discovered … Continue reading Oldest Igneous Meteorite May Reveal Secrets of Our Early Solar System