Rosetta mission lands Philae probe on the tail of a comet . It has taken two years for the ESA - 2 probe to rendezvous with its tail . We need to have such vision to appreciate/nurture Earth , and our place in the universe . Scientists weigh in on why this is a monumental event for humanity .
Rosetta mission lands Philae probe on the tail of a comet . It has taken two years for the ESA - 2 probe to rendezvous with its tail . Scientists weigh in on why this is a monumental event for humanity .