Families With A Common Origin
Some irregular satellites appear to orbit in 'groups', in which several satellites share similar orbits. The leading theory is that these objects constitute collisional families, parts of a larger body that broke up.
Read more about this topic: Irregular Moon
Famous quotes containing the words families, common and/or origin:
“Nostalgia is one of the great enemies of clear thinking about the family. The disruption of families in the nineteenth century through death, separation, and other convulsions of an industrializing economy was much more catastrophic than we imagine.”
—Joseph Featherstone (20th century)
“It is a common saying, and in everybody’s mouth, that life is but a sojourn.”
—Plato (c. 427–347 B.C.)
“Though I do not believe that a plant will spring up where no seed has been, I have great faith in a seed,—a, to me, equally mysterious origin for it.”
—Henry David Thoreau (1817–1862)