Professor Young's estimate is that Phobos may shed upon Mars one-sixtieth and Deimos one-twelve-hundredth as much reflected moonlight as our moon sends to the earth.

Accordingly, a "moonlit night" on Mars can have no such charm as we associate with the phrase.

But it is surely a tribute to the power and perfection of our telescopes that we have been able to discover the existence of objects so minute and inconspicuous, situated at a distance of many millions of miles, and half concealed by the glaring light of the planet close around which they revolve.
If Mars's moons were as massive as our moon is they would raise tremendous tides upon Mars, and would affect the circulation of water in the canals, but, in fact, their tidal effects are even more insignificant than their light-giving powers.

But for astronomers on Mars they would be objects of absorbing interest.
Upon quitting Mars we pass to the second distinctive planetary group of the solar system, that of the asteroids..