ALIEN কি সত্যি আছে? (Do Aliens Really Exist in Bangla) | এলিয়েন ভিনগ্রহের প্রানী। The universe is unbelievably big – trillions of stars and even more planets. Soo… there just has to be life out there, right? But where is it? Why don’t we see any aliens? Where are they? And more importantly, ...