Do you think that beings from another planet have been on Earth?

Have beings from another planet been on earth, do they walk amongst us and does the government communicate with them? Are the governments hiding this from us, slowly making us get used to the idea with hollywood movies etc?Do you think that beings from another planet have been on Earth?
They have been and will be... meteors and other foreign objects entered earth have some microbes in it. Some would survived along the way if they could withstand the burning heat as they hit the earth's atmosphere.Do you think that beings from another planet have been on Earth?
Nanu.. nanu... shazbat!
YES HONS LOOK WHO WE HAVE IN GOVERMENT WALKING AROUND AS PRESIDENT HONS-- THEY SURE WALK AMONGEST US HONS-- AND DOES THE GOVERMENT COMMUNICATE WITH THAT ALEN IN THE WHITE HOUSE, NO. AND YES THE GOVERMENT HIDES THINGS FROM US, YOU KNOW THAT LIKE ROSEWELL, AND HOLLYWOOD HAS GOTTEN RICH OUT OF IT YES.Do you think that beings from another planet have been on Earth?
Bush is one of them.
millions timesDo you think that beings from another planet have been on Earth?
YES FOR SURE .

THEY PUT US ON EARTH TO USE AS EXPERIMENTS
No. It is not impossible, but it is less likely than that I should fly by flapping my arms. Given the enormous distances, and the fundamental limit on speed arising from special relativity, it is not a realistic prospect, even for a civilization more advanced than ours.