Well first if it is a Spaceship, then it is no longer a UFO. UFO stands for Unidentified Flying Object. However in answer to your question, the answer is nobody knows. There has been and continues to be predictions made by Contactees (People who claim contact with Aliens) and by conspiracy theorists but as yet nothing has come to fruition.
"UFO" does not mean alien spaceship. So far there is no scientific reason to think even one alien spaceship has ever landed on Earth. UFO just means "I saw something in the sky and I personally don't know what it was."
a UFO
Yes. He comes randomly once a week during the morning in his UFO. Look for him in the sky and prepare to shoot him down with your slingshot.
There are no proven accounts of a UFO landing on earth.
Yes. There Is A UFO On Google Earth.
The name "Spaceship earth" came about because the earth moves through space and it is holding people just like a spaceship.
Spaceship Earth - Epcot - was created in 1982.
Earth is like a spaceship because it holds people and goes through space like a spaceship.
You can't . UFO's could be an urban myth and there is no proof that they exist, Until Earth meets a real alien or finds a ship they will continue to be a myth.
Operating Manual for Spaceship Earth was created in 1968.
A UFO is a thing, not a creature. A UFO, or Unidentiifed Flying Object, does not come from outside the Earth. UFOs are usually unidentified airplanes, weather conditions, reflections off your windshield, and so forth.
Both would probably move away from each other, because the earth moves too.