Do all planets have moons?

25 April 2007 | 07:22 Code : 13495 Geoscience events
visits:39
No.Mercury and venus don't have moons.Mars has two very small moons....

No.Mercury and venus don't have moons.Mars has two very small moons - Phobos and deimosJupiter has (at last count) well over 504 of which can be seen in binoculars (Gannymede, Callisto, Europa, Io)Saturn's biggest is Titan, but aslo has MANY moreNeptune and Uranus also have several.The moon-count of the planets from Jupiter outwards is constantly rising, as new ones are constantly being discovered.As for how they got there - some formed along with the parent planet, out of coagulating matter - as they got bigger, they attracted the smaller fragments around them -'sweeping' their orbit cleanOthers are 'captured' asteroids and comets which wandered too close, and got caught up in the planets' gravitational fields.In general - the bigger ones formed alongside the planets, and the 'captured' ones tend to be among the smaller onesFor up-to date info on amounts of moons, and names, try putting the planets' names into 'wikipedia', each planet entry has a section on it's moons.

tags: QAZVIN


Your Comment :