where did you get the idea that Nasa frequestly spotted alien??

i believe there must be other life form out there, but they will be so different from us that we may not be able to see them if they are infront of us. a lot of sci fi have story of alien come to enslave or give us technology, but really it is highly unlikely their technology can be used by us, like if you found an ant on the side of the road do you try to teach them human technology? the funniest sci fi plot about alien have to be Independent Day where all the alien ship are control by Mac compatible computer

because UFO conspiracy theory people dont have a good imagination, why should alien look like life form on earth with eye and limb, if we really meet with alien i dont expect their physical appearance to be anything like life on earth, that is if they have physical appearance.

how about the idea that this universe is a simulator run by some super advance Alien? like a Sims game that we like to pay so much.

i believe there is life out there in the universe, but the odd of us ever making contact with those life form will be so rare that it is unlikely we will ever meet them. even if we does meet then they may not be anything we imagine they are like in popular science fiction movie, i will be unlikely to meet another carbon base life form that happen to develop technology high enough to reach earth.

even if they reach earth they may be so much more advance then us that they may have no interest at all in meeting us, like if you see an ant will you take it back home and teach it the knowledge of human being?

exploring the cosmos require significant amount of investment over a very long period of time, when ever there is recession the space program will likely get budget cut because it is view as non essential. that is the biggest challenge to space exploration, there is no doubt that there are many talented people working on space exploration but no enough resource are being provided.