Time-Lapsed Animation of a Mercury Day (video) NASA/Goddard Space Flight Center Loading video... Caption Parts of Prokofiev crater (center) and Kandinsky crater (upper left side of Prokofiev) stay in darkness, making it possible for ice to persist on the surface. This time-lapsed animation represents nearly a full Mercury day. The illumination is derived from information provided by the Mercury Laser Altimeter. Credit NASA Usage Restrictions None 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.