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:
“The ideal of the self-sufficient American family is a myth, dangerous because most families, especially affluent families, do in fact make use of a range of services to survive. Families needing one or another kind of help are not morally deficient; most families do need assistance at one time or another.”
—Joseph Featherstone (20th century)
“It is a very common error of some unscrupulously infidel-minded, selfish, unprincipled, or downright knavish men, to suppose that believing men, or benevolent-hearted men, or good men, do not know enough to be unscrupulously selfish, do not know enough to be unscrupulous knaves.”
—Herman Melville (1819–1891)
“Each structure and institution here was so primitive that you could at once refer it to its source; but our buildings commonly suggest neither their origin nor their purpose.”
—Henry David Thoreau (1817–1862)