Are there any moons in our solar system that are not spherical?

serpa

Yes. Mars - Both Phobos and Deimos - they are roughly potato shaped, due to the fact that they don't possess enough gravity to keep them round. http://www.redcolony.com/art.php?id=0102260 Jupiter: The Ananke group is a group of retrograde non-spherical moons of Jupiter that follow similar orbits to Ananke and are thought to have a common origin. The core members include (from biggest to smallest): * Ananke * Praxidike * Iocaste * Harpalyke * Thyone * Euanthe * Euporie http://simple.wikipedia.org/wiki/Ananke_group Mneme or Jupiter XL, is a non-spherical moon of Jupiter. http://simple.wikipedia.org/wiki/Mneme_(moon) Metis, Andrastea, Amalthea, Thebe http://en.wikipedia.org/wiki/Moons_of_Jupiter That's all I could find of Jupiter Mar 22 11, 7:36 PM

serpa

Saturn. Saturn has sixty-two moons with confirmed orbits, fifty-three of which have names, and only thirteen of which have diameters larger than 50 kilometres.[1][2] Saturn has seven moons that are large enough to become spherical... http://en.wikipedia.org/wiki/Moons_of_Saturn Uranus, the seventh planet of the Solar System, has 27 known moons,[1] all of which are named after characters from the works of William Shakespeare and Alexander Pope.[2] William Herschel discovered the first two moons, Titania and Oberon, in 1787, and the other spherical moons were discovered in 1851 by William Lassell (Ariel and Umbriel) and in 1948 by Gerard Kuiper (Miranda). http://en.wikipedia.org/wiki/Moons_of_Uranus Neptune - Note 4^ Diameters with multiple entries such as "60×40×34" reflect that the body is not spherical and that each of its dimensions has been measured well enough to provide a 3 axis estimate. http://en.wikipedia.org/wiki/Moons_of_Neptune See the link. I should have just answered "yes" and left it at that. Mar 22 11, 8:13 PM

Zbeckabee

The Jovian gas giants each have a large number of moons (at least 13 for Neptune, at least 63 for Jupiter). It's not really feasible to include them all, but some are larger than others. I've chosen an admittedly arbitrary threshold of 10 Zg (1019 kg) and created symbols for any moon larger than that, which lets in Saturn's moon Hyperion but not Jupiter's largest non-Galilean moon Amalthea. This is also near the point at which moons become non-spherical - there are some non-spherical objects above this line, but no spherical ones below. http://www.suberic.net/~dmm/astro/moons.html Mar 22 11, 9:48 PM