Illustration of Earth as Seen from the Moon (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption This is an illustration of Earth as seen from the moon. The gravitational tug-of-war between Earth and the moon raises a small bulge on the moon. The position of this bulge shifts slightly over time. Credit NASA's Goddard Space Flight Center 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.