Dear Friends! Probably more than a decade back understanding tells us : If the average matter density of the universe happens to be smaller than a critical value,then the galaxies will never come to a halt and turn back(Open Universe).Which will imply cold and lonely death. If on the other hand average density is larger than the critical density ,then Universe will turn back and end in a big crunch(Close Universe I understand). My questions are: 1. Do we now know our fate? 2.What role has inflationary cosmology played in determining critical density. 3. Has the matter remained strictly matter after relativity(affecting these questions) 4. Is idea of Dark matter caused only by such background researches.