Hubble Image of Mars (IMAGE) NASA/Goddard Space Flight Center Caption Hubble took this photo of Mars when the planet was 50 million miles from Earth, during its last opposition in 2016. The photo reveals details as small as 20 to 30 miles across. Credit NASA, ESA, the Hubble Heritage Team (STScI/AURA), J. Bell (ASU), and M. Wolff (Space Science Institute) 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.