Are There Any Real UFO, Or Outer Space Ships That Have Landed Or Crashed Upon Earth And Where?

There are many controversies involved as far as UFO's are concerned. People, even scientists have different views about them. Reports of sightings of UFO's are common since 1947 and thousands of them have been reported since then. You can get a list of the major sightings of UFO's at the link below:
en.wikipedia.org

In July,1947, as the story goes, the US military recovered debris from a spacecraft near Roswell, New Mexico.  This incident has been the subject of extensive speculation and rumors for 60 years.  Believers in UFOs have claimed that the military covered up a spacecraft's recovery while the military has claimed it was the remains of a top-secret research balloon.  What do you think?

What if you saw a unidentified flying saucer in the sky above your house since then I thought E.T.was real