You don't even know if UFOs exist, and no-one will ever know how/if they land on earth at all.
Sure UFOs exist, standing for "Unidentified Flying Object", doesn't mean it has to be an alien spacecraft. Which also gives you the answer - they fly to Earth.
UFO means unidentified flying object, and is usually understood to mean beings from other planets. The existence of such beings from other planets - or their aircraft - has not been confirmed yet (read about the Fermi Paradox). If intelligent being exist on other planets, probably on other star systems, then yes, it is quite possible, even likely, that they can develop the technology to travel all the way here.
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No, it is not possible for UFOs to reach the Earth. If they did, they would be identified, and would no longer be "U"FOs. Certainly, no one would be happer than I to see proof that alien spacecraft had visited the Earth, or that they were here NOW. But there is no proof that there are civilizations on other planets or in other solar systems, or that they have any interest in visiting us here.
Be patient. There is an entire universe out there to be explored, and we know now only a tiny fraction of what we will know in 100 years - or in a thousand.
Like flying machines on Earth, UFOs are equipted with landing gear.
UFOs are very often seen on Earth, and nobody knows what is inside of one. If there are truly UFOs from space, when they supposedly come to Earth they may already be learning from us.
There are those among us who believe that UFOs have always been hovering nearby.
UFOs Over Earth - 2008 The Fayetteville Incident - 1.1 was released on: USA: 27 October 2008
Yes, they came to earth on 24/7/09 because i am from Pluto
No they don't, and you ever tells you they do are lying
UFOs Over Earth - 2008 Mass Sightings in Mexico 1-3 was released on: USA: 24 November 2008
Thats probiably because aliens dont like earth very much. Legend has it, That there is a 00.1% chance (small chances) for the aliens to come to earth with there UFOs. (i have seen over 4 UFOs in the sky before)
If they do it's probably because their planet is northwest of earth.
Well, there are real things that appear to be flying that couldn't be identified; that's why they're called UFOs (Unidentified Flying Objects). Some are later identified. There has never yet been actual proof that UFOs come from anywhere but earth.
Not very good I'm afraid. In all the decades that UFOs have been sighted or reported, no credible evidence has been put forward that UFOs are from anywhere but the planet earth, either produced by human hands or by human imaginations. None whatsoever.
I guess you could but it would defeat the whole purpose. If you built it then it's identifiable. UFOs by nature have to be unidentifed, coming from a place that is not Earth, or unlike anything we as humans can build.