The platypus is one of evolution's lovable, oddball animals. The creature seems to defy well-understood rules of biology by combining physical traits in a bizarre way. They're egg-laying mammals with duck bills and beaver-like tails, and the males have venomous spurs on their hind feet. In that rega rd, it's only fitting that astronomers describe some newly discovered oddball objects as "Astronomy's Platypus." ...read more read less