We often hear exciting news about 'habitable planets' that might have life, or at least the 'building blocks of life.' Are these reports based on sound thinking about the requirements?
OOL is short for Origin of Life. There's only one theory that works. The rest are so improbable, their supporters go to ridiculous lengths to believe them.
There's no stretching the truth any more. Cassini data have led all the ringmasters to the conclusion that the rings of Saturn are not billions of years old.
The data gathering phase is over, but the data mining phase will continue for years. This entry also shares some news about other solar system objects showing youthfulness.