If a non-astronomer tells somebody about ’strange things’ the first he gets is lots of jokes.

That’s why a serious astronomer must not tell nobody about strange things … if he wants to keep beeing astronomer.

May be Google is fine tuned by aliens!!!

http://en.wikipedia.org/wiki/Varginha_UFO_incident

http://en.wikipedia.org/wiki/Rendlesham_Forest_Incident

There is no need to believe that an UFO will ever land on the White House Lawn. Also, do not expect that they will ever find any evidence for extraterrestrial life (aside from bacterias and microorganisms). That is because there are no extraterrestrials visiting the earth! Whatever “they” are: They are NOT from another planet in our galaxy! Instead, allmost all of the evidence that we have points to the so-called “interdimensional hypothesis”.
http://en.wikipedia.org/wiki/Interdimensional_hypothesis

And Stephen Hawking, brilliant as he is in other areas, doesn’t seem to have done ANY research into exopolitical matters and ufology in general. Maybe if he had known about Varginha or Rendlesham and had seen this video:

http://www.youtube.com/watch?v=7vyVe-6YdUk

…he wouldn’t have said the stupid things he said.
For example: Are Buzz Aldrin, Gordon Cooper and the incredible amount of high ranking government officials that have spoken out openly about UFO’s recently �cranks & weirdos� (as Hawking put it)? Remember: Gordon Cooper filmed a UFO during the time when he studied at the USAF Experimental Flight Test School at Edwards AFB. It landed right before his eyes on a dry lake bed. Too bad he gave the film to some guy from the government. The film simply disappeared… .
Furthermore, the “acclimatization campaign” is under way (and now more obvious than ever), as you can read here:

http://newsblaze.com/story/20080516152544reye.nb/newsblaze/OPINIONS/Opinions.html

As the late J. Allen Hynek said: “There is an embarrassing body of evidence” that we are being visited.
In a few years we will see a significant increase in suicides among hardcore ufo-skeptics as groups within the NATO are pushing disclosure right now and the UN seems to be even more upfront about this.