Bruce Murray Space Image Library
Movie of Phobos and Deimos mutual event, Curiosity sol 351
![Movie of Phobos and Deimos mutual event, Curiosity sol 351](https://planetary.s3.amazonaws.com/web/assets/pictures/20130816_PIA17352.gif)
Here are the 41 original frames:
![Transit of Deimos by Phobos, Curiosity sol 351](https://planetary.s3.amazonaws.com/web/assets/pictures/20130816_PIA17089.gif)
Most of the images were taken with some image compression, but ten of them were returned to Earth with lossless compression. Six of those ten are shown here:
![Six frames from the occultation of Deimos by Phobos, Curiosity sol 351](https://planetary.s3.amazonaws.com/web/assets/pictures/_512x768_crop_center-center_line/20130816_PIA17353.jpg 512w)
Here is a comparison image, showing the apparent size of Phobos as compared to the apparent size of our Moon in our sky. Phobos is less than 1% the diameter of our Moon but is roughly 100 times closer to Mars than our Moon is to Earth.
![Apparent sizes of Phobos and Deimos in Curiosity's sky compared to the Moon in Earth's sky](https://planetary.s3.amazonaws.com/web/assets/pictures/_300x300_crop_center-center_line/20130816_PIA17351.jpg 300w)