I firmly believe in the existence of Aliens in parallel universe made up of dark energy & dark matter. They must be more intelligent & powerful then us & can reach to us within fraction of second by help of teleportation of their ethereal & causal body via gateway of black hole. Sukshmalokas made up of dark matter are places of these Aliens as prescribed in Indian mythology. In fact some of them are very nearer to us & we can also approach them. I had also experience one of these places. Pt. Shri Ram Sharma Acharya give hints on these phenomena in his various books. A day will come when we could see them & communicate.Image credit: NASA, HST, ESA, ESO