Gilbert suddenly said,"I'm Space Scientist & Ava is Physicst.We are childhood friends.& we've never liked Titan. It is just......"Ava said,"O, Gilbert just relax."Then Ava again said,"When spaceship was ready to go Titan from Earth, a Terrible War broke out many people had died as all thaugt it'll be better than planet Earth in that people our parents was also involved. By that war, I had lost my Father."Ava had tears in her eyes....