Hi All Gravitation seems very interesting field to me. One of the most mysterious field of studies, which is having lots of unsolved questions. I wanted to updated myself and know about "what are the hot research area on gravitation where researchers are working mostly". Which all mysteries, they are trying to unfold currently or they have it as a challenge and will be looked into in coming days. Latest in the news was Gravitational waves confirmation, i guess it will further boost the moral of researchers working in Gravitation related researches.