Have Aliens Landed On Earth?

Since there is still no proof of aliens landing on earth, we can't admit their existence.
There is still not even appropriate picture of theirs that prove their existence.
For aliens universe still needs to be explored more.
Had there been any alien landing on earth or any alien entering into earth's atmosphere/orbit, they pictures/videos could be surely captured by those satellites circling up above the sky so high.
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There are different schools of thoughts regarding UFO's. But seriously, NO record have been found of an alien on earth so far.

No reliable record of beings from another planet exist.  Nevertheless, sometimes, when I see and hear about the things that humans do - like war and worshipping pop idols- I feel like I might be an alien.

Yes they have because iv'e seen them

According to clifford stone (disclosure project witness 2001) the cia had listed 57 different species of ET by 1989 some of which look just like you and i. Scary i know. Edgar mitchell is the latest witness to come forward and state that we have been visited many times. Its sort of like a cosmic watergate..