i had an uncle who passed a couple years ago but he was a research scientist for the goverment. back in the 70's when one of the space capsules returned to earth they found a small micro organism on the outside of the craft. his job at one time was to kill this thing that matched no life form on earth. extreme cold did not hurt and neither did extreme heat. not sayin it was from space but nobody knew where the thing came from or how it came to be on the space capsule. it may have come from the upper atmospher or even the ocean.but who knows.

so yes i do beleive that there is extraterestrail life. space is just to immense for there not to be.