As if exploring the planet Mars was not cool enough! In April, 2022, NASA’s Mars rover Perseverance – shooting video from the planet’s surface – captured the Mars moon Phobos crossing in front of the Sun. Fascinating video! But is this truly an eclipse? Or is it a transit? This is your web research project of the day. And the video images prove that moons and planets are not all smooth, circular objects as they sometimes appear to be. Check out the decidedly potato profile of Phobos!