Aliens whether it exists or not

" Aliens whether it exists or not?" For too long, this topic has always been at loggerheads over ,the famous British astronomer Sir Patrick Moore, declared recently, scientists will be in 50 years to find the evidence to prove the existence of extraterrestrial life beyond our solar system does . However, in the eyes of the astronomer mole , aliens may not visit the earth, because they think the earth is only a "boring planet!"

I also think that, there are tens of millions of planets in this universe, not only the existence of life on Earth, there puzzling and mystery in many ancient civilizations of Earth, for example: the Mayan culture , the ancient Egyptian culture at there are similar traces of the alien.

Also many movies about aliens and outer space theme, and has many aliens events around the world, to include UFO incident, crop circles ... and so on. The very mysteries of the universe is, do not know if in the future , human will contact with extraterrestrial biological or not.