Asteroids Pummel Early Earth (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption Artist's concept of meteors impacting ancient Earth. Some scientists think such impacts may have delivered water and other molecules useful to emerging life on Earth. Credit NASA's Goddard Space Flight Center Conceptual Image Lab Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.