Mars' inner moon Phobos appears far darker than the bright clouds of Mars in this view taken by the Indian Mars Orbiter Mission on October 14, 2014. Image by Emily Lakdawalla for Planetary Society.
Mars' inner moon Phobos appears far darker than the bright clouds of Mars in this view taken by the Indian Mars Orbiter Mission on October 14, 2014. Image by Emily Lakdawalla for Planetary Society.