posted on Jun, 23 2011 @ 12:29 PM
Take a look at this to-scale illustration of the relative sizes and distances Mars and its moons.
If you are familiar with gravitational tidal effects of bodies in space you would quickly deduce without even using math that the Martian moons have
next to zero tidal effects on Mars, in fact Jupiter may have more tidal effect on Mars at the planets closest approach, which interestingly for Mars,
is an interesting comparative distance from the sun, the difference is one is in miles and the other is in kilometers. 227,940 million km from its
closest approach to Jupiter, about the same mean figure from the sun in MILES.
If Mars had larger moons where its current moons are there would be really whacky tidal effects on Mars, as Phobos orbits Mars about 3 times a Martian
day! About 7.7 hours, and Deimos once every 30 and a third some hours.
Both moons are tidally locked, always presenting the same face towards Mars. Since Phobos orbits Mars faster than the planet itself rotates, tidal
forces are slowly but steadily decreasing its orbital radius. At some point in the future, when it approaches Mars closely enough, Mars's Roche
limit, Phobos, even though it's the larger of the two moons, will be broken up by the tidal forces of Mars and rain down to the surface
These are tiny moons but nothing that mankind has ever created could ever 'move' either of these bodies, for the foreseeable future.