Part of a bulk data release from the European Space Agency’s Mars Express orbiter (available at ftp://psa.esac.esa.int/pub/mirror/MARS-EXPRESS/HRSC, posted on unmannedspaceflight.com by user peter59) this wonderful image shows Phobos, the larger of Mars’ two moons, in orbit against the backdrop of the planet’s limb. The dark, irregularly-shaped moon is shown in amazing clarity, giving a very nice…
Lights in the Dark 