... Phobos from Mars Express . ... The origin of Phobos, the larger of the two moons orbiting Mars, remains unknown. ... Detailed View of a Solar Eclipse Corona . ... Normally overwhelmed by the bright solar disk, the expansive corona, the sun's outer atmosphere, is an alluring sight. ... Although they would have appeared as two of the brighter galaxies on the night sky, the opaque dust of the central band of our Milky Way Galaxy had obscured them from being seen in visible light. ...