An image of the larger of Mars' two moons, Phobos, orbiting in front of Mars by the High-Resolution Stereo Camera on board ESA's Mars Express spacecraft on January 22, 2007. #esa

<p><span style="color: #222222; font-family: Montserrat, Helvetica, Arial, sans-serif; font-size: 16.64px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 300; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">ESA/DLR/FU Berlin</span></p>

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