Professor: We have a 'moral obligation' to seed universe with life

(PhysOrg.com) -- Eventually, the day will come when life on Earth ends. Whether that`s tomorrow or five billion years from now, whether by nuclear war, climate change, or the Sun burning up its fuel, the last living cell on Earth will one day wither and die. But that doesn`t mean that all is lost. What if we had the chance to sow the seeds of terrestrial life throughout the universe, to settle young planets within developing solar systems many light-years away, and thus give our long evolutionary line the chance to continue indefinitely?