An unexplained boom is a very loud noise similar to a sonic boom created by the supersonic flight of an aircraft. However, these booms are unexplained, because, for instance, no supersonic flight was scheduled at the time the boom was heard. A common explanation is that classified flights by military aircraft are responsible.
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Famous quotes containing the words unexplained and/or boom:
“You’re neither unnatural, nor abominable, nor mad; you’re as much a part of what people call nature as anyone else; only you’re unexplained as yet—you’ve not got your niche in creation.”
—Radclyffe Hall (1883–1943)
“The cohort that made up the population boom is now grown up; many are in fact middle- aged. They are one reason for the enormous current interest in such topics as child rearing and families. The articulate and highly educated children of the baby boom form a huge, literate market for books on various issues in parenting and child rearing, and, as time goes on, adult development, divorce, midlife crisis, old age, and of course, death.”
—Joseph Featherstone (20th century)