Three other worlds in the solar system appear to have features that would allow life to develop: Mars, Jupiter's icy moon Europa, and Titan. The best bet may not be what you think.
When scientists speculate about the possibility of life on other worlds in our solar system, Mars and Europa top the list. But, despite the cold, Titan should be considered a contender. In fact, finding life on this strange saturnian moon may be more likely than finding it anywhere else.