Mercury Ice at the Poles (IMAGE) Georgia Institute of Technology Caption Despite Mercury's daytime Vulcan heat, there is permanent ice at the poles, according to data and images from a NASA probe that visited Mercury in 2011. Credit NASA / MESSENGER Usage Restrictions None License Licensed content 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.