Credit: NASA/JPL/JHUAPLImage source with more information
Mars Reconnaissance Orbiter provides these two colour views of Mars' moons Phobos (above) and Deimos.
Phobos orbits Mars in a period shorter than a Martian day, so would appear to an observer on the surface to rise in the west and set in the east several times a day. Little Deimos is somewhat less interesting, but at least, unlike Phobos, it won't be smashing into its mother planet in about 100 million years.
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