From Carolyn Porco: <a href="https://twitter.com/carolynporco/status/1352323320406970368" rel="nofollow">https://twitter.com/carolynporco/status/1352323320406970368</a><p>> A scientist pushing the idea that humanity can live beyond Earth in space colonies around asteroid Ceres.<p>> He recognizes humans will need full gravity & he rightly nixes Mars for multi-generational surface colonies.<p>> BUT, still, he's nuts.