UFO's
There has been a major effort to confuse the facts about this subject and that effort has been successful to put it mildly. Use your own discretion I haven't been able to look at all these sites and if I weeded out all the flawed sites there probably wouldn't be any at all.
"Some people think that for example aliens intervened in 3500 BCE in Egypt to help build the pyramids. Well you know doggone it the Egyptians were perfectly capable of putting big blocks on top of other big blocks right? If the Egyptians had suddenly developed cell phones then I would say OK there's intervention there but that's not what they did." Seth Shostak
"Not so fast Egyptians are probably not capable of moving nearly as much stone as they did Seth you might want to look into the large number of megaliths and experiments to move stones with ancient technology before you jump to conclusions. This doesn't prove Aliens intervened but it does prove another unsolved mystery that might be related. Before coming to hard conclusions it would be better if we had all the facts." Seth Shostak's distant relative
One of the most compelling arguments as to why there are no aliens visiting Earth is that it is just too far. The nearest star system is 4.3 light years away or about 25 trillion miles. The nearest single star system with planets in the habitable zone is probably much farther. The reason I exclude most binary stars is because in order for life to evolve it requires a consistent environment for a long time. In order for this to happen it almost certainly requires a single star system since a planet orbiting a binary would be exposed to 2 suns part of the year and only one at other parts of the year. This will lead to a highly inconsistent environment.
In many cases people have argued that the fastest automated space craft only traveled about 37,000 miles per hour I think. Whatever the speed is it is not nearly fast enough to get to a habitable system in a reasonable amount of time. It is often argued that we would have to go several times the speed of light to get to a star system in a reasonable time. If you think of getting there in the life span of a human without using cryogenics or multi-generational space craft this is true. However if your thinking about automated probes that may use artificial intelligence this may not be true since they may last for much longer. In one case on a UFO show when they talked about either being too slow or going several times the speed of life they had a diagram of the Daedalus project in the background. This is ironic since they were omitting the middle ground with the audio and anyone who knows what the Daedalus project is may realize that it theoretically involves traveling 10% of the speed of light which would be the middle ground. Neither the Daedalus nor the Orion Project has gone through the final test to prove that they work since this would involve actually building it however the Orion project is based on mostly tested scientific principles.
If either the Daedalus project or Orion project or any other propulsion system can reach this speed and then slow down once it arrives at the destination it overcomes the distance obstacle with limitations. If it is automated it probably won't involve migrating humans unless they use cryogenics. The only alternative would be a multi-generation ship that has an enclosed life support system. This life support system would require full recycling and the most efficient use of resources possible assuming it is possible at all.
The following sites including NASA are about astronomy and space exploration projects that are actually happening. The technology clearly seems to be advancing rapidly over the last 50 years.
Lists of stars organized in several different ways including closest stars
Wikipedia Extraterrestrial life
The following articles are about theoretical propulsion projects and gravitational laws. These do not address any of the issues but propulsion.
Wikipedia Newton's laws of motion
Wikipedia Kepler's laws of planetary motion
Biosphere 2 addresses an enclosed environment. This has not been successful for long-term contained environment but it has taken the first step.
Wikipedia The International Space Station
Traveling long distances will almost certainty be much more effective if you can carry the most in the smallest amount of space which is why Nanotechnology will almost certainly be a necessity. Since life support may be the toughest part of space travel the more they can rely on Automation and Artificial Intelligence the more effective it will be.
Wikipedia Artificial Intelligence
Free online copy of the Condon Report
Free online copy of The Report on Unidentified Flying Objects, by Edward J. Ruppelt
Free online copy of The Flying Saucers Are Real by Donald Keyhoe [1950]
http://skepdic.com/ufos_ets.html
http://www.ufoinfo.com/contents.shtml
http://abcnews.go.com/Technology/Primetime/story?id=468496
http://ufos.about.com/od/classicufocases/u/famouscases.htm
http://userpages.bright.net/~phobia/main.htm
http://www.pbs.org/wgbh/nova/aliens/
http://www.nationalufocenter.com/artman/publish/ufos.php
http://www.alienresistance.org/index.htm
http://www.disclosureproject.org/
http://www.cropcirclesecrets.org/
http://www.skepdic.com/cropcirc.html
http://www.ufoevidence.org/topics/CropCircles.htm
http://www.ukcropcircles.co.uk/
http://www.qsl.net/w5www/mutilation.html
http://www.skepdic.com/cattle.html
http://www.bibleufo.com/cattle.htm
Wikipedia Abduction phenomenon
http://ufos.about.com/od/aliensalienabduction/a/bestabductions.htm
http://skepdic.com/aliens.html
http://www.ufocasebook.com/alienabductions.html
http://en.wikipedia.org/wiki/Hypnotism
http://en.wikipedia.org/wiki/Sigmund_Frued
http://en.wikipedia.org/wiki/Dreams
http://en.wikipedia.org/wiki/Revelation
The following are UFO cults. The evidence of UFOs may not be as clear as many people would like but there is plenty of evidence of cults that dictate the truth about them without evidence. These are often ignored by UFO advocates because they want the public to take the subject seriously. They are not looked into closely by skeptics either. When skeptics do look at them it is often to ridicule all people who express an interest in UFOs as a bunch of clowns. They don't look into it in a way to intervene and prevent disasters like the mass suicide of Heavens Gate in 1997. One person who has looked at these cults is Jacques Vallee who wrote "Messengers of Deception" in 1979 in an attempt to warn the public about UFO cults. This was 18 years before the suicide of Heavens Gate (aka Human Individual Metamorphosis) which was one of the cults he attempted to warn them about. His warnings went unheeded and the cults got worse.
Wikipedia Ummo
The following are UFO authors and in most cases their wikipedia profile. this list includes a wide range from some that are very scientific like Jaques Vallee (who does speculate but makes it clear that it is speculation) to some that ignore obvious facts like Zecharia Sitchin (who ignores Keplar's laws of planetary motion and habitable zones required for life). Use your own discretion. Many of these pages will also have links to the authors home page at the bottom in the external links section.
http://en.wikipedia.org/wiki/Georgina_Bruni
http://en.wikipedia.org/wiki/Nick_Pope
Milton William Cooper
The following are skeptics. In most cases the skeptics don't make much if any effort to organize information or figure out what is true before expressing strong skepticism. They may make good point in many cases but they often ignore facts that don't suit there cause. What we need are more rational skeptics who try to figure out what is true first with an appropriate amount of skepticism. In many cases people like that have become UFO advocates like Allen Hynek.
The Exception may be Marcello Truzzi who has criticized what he calls pseudo skeptics who claim that phenomena are definitely not true. He recommends skepticism that doubts unproven phenomena but doesn't rule it out without sufficient evidence. He also states that many of the theories to explain away mysterious phenomena are at least as far fetched as the phenomena themselves.
A Commentary by Marcello Truzzi at http://www.anomalist.com/commentaries/pseudo.html
Another partial exception is Carl Sagan who spent most of his time in the public eye focusing on educating the public on science.
http://www.csicop.org/klassfiles/Home.html Philip J. Klass
http://www.debunker.com/ufo.html
http://greyfalcon.us/Skeptic%20UFO.htm
Wikipedia List of UFO sightings
UFO Casebook List of UFO sightings
UFO evidence List of UFO sightings
Blue Book unknowns List of UFO sightings PDF file at www.cufos.org
List of most notable UFO sitings in Chronological order
Aurora Texas and wave of airships across USA 1897 http://en.wikipedia.org/wiki/Aurora_Texas_UFO_Incident
http://www.ufocasebook.com/Aurora.html
http://www.ufocasebook.com/1897texas.html
http://www.ufocasebook.com/1897arkansas.html
http://en.wikipedia.org/wiki/Battle_of_Los_Angeles
http://www.ufocasebook.com/battleoflosangeles.html
http://en.wikipedia.org/wiki/Roswell_UFO_incident
http://en.wikipedia.org/wiki/Witness_accounts_of_the_Roswell_UFO_incident
List of witnesses: PFC Elias Benjamin, Bessie Brazel, Bill Brazel Jr., Mac Brazel, Walter Haut, Jesse Marcel, Jesse Marcel Jr., Sgt. Robert Porter, Loretta Proctor, Lewis Rickett, 1st Lt. Robert Shirkey, Sgt. Robert Smith,
http://www.ufoevidence.org/topics/roswell.htm
http://www.scifi.com/roswellcrash/
http://www.coverups.com/roswell/index.htm
http://ufos.about.com/od/bestufocrashcases/p/roswell.htm
http://www.cufos.org/ros2.html
http://en.wikipedia.org/wiki/Kapustin_Yar
http://en.wikipedia.org/wiki/Lubbock_Lights
http://www.ufocasebook.com/lubbocklights.html
Chapter Eight of Edward Ruppelt's book about the Lubbock Lights.
http://www.nicap.org/docs/lubbock/510825dir.htm
http://en.wikipedia.org/wiki/1952_Washington_D.C._UFO_incident
http://www.ufocasebook.com/washingtondc1952.html
http://www.informantnews.com/brief/dc52flap.html
http://www.alienationsam.com/historic_ufo/washington/sightings.html
http://www.ufocasebook.com/ellsworth.html
http://www.ufocasebook.com/bigsur.html
http://en.wikipedia.org/wiki/Exeter_incident
http://www.ufocasebook.com/Exeter.html
http://en.wikipedia.org/wiki/Kecksburg_UFO_incident
http://www.ufocasebook.com/Kecksburg.html
http://www.ufocasebook.com/michigan1966.html
http://www.ufocasebook.com/michigan1966chase.html
http://www.ufocasebook.com/michigan1966revisited.html
http://www.ufocasebook.com/michigan1966.html
http://www.ufocasebook.com/1967malmstrom.html
http://www.theufochronicles.com/2008/12/did-ufos-cause-shutdown-of-icbms-at.html
http://www.abovetopsecret.com/forum/thread421689/pg1
http://en.wikipedia.org/wiki/Falcon_Lake_Incident
http://www.ufocasebook.com/Falconlake.html
http://en.wikipedia.org/wiki/Shag_Harbour_incident
http://www.ufocasebook.com/Shagharbor.html
http://www.ufocasebook.com/Kansas.html
http://www.ufocasebook.com/chihuahuamexico1974.html
http://en.wikipedia.org/wiki/Colares_UFO_flap
http://www.ufocasebook.com/colares1977.html
http://en.wikipedia.org/wiki/Rendlesham_Forest_Incident
http://www.ufoevidence.org/cases/case279.htm
http://ufocasebook.com/Rendlesham.html
http://en.wikipedia.org/wiki/Belgian_UFO_wave
http://www.ufocasebook.com/Belgium.html
http://www.ufoevidence.org/cases/case1125.htm
http://www.ufocasebook.com/hollandmichigan1994.html
http://en.wikipedia.org/wiki/Phoenix_Lights
http://www.ufocasebook.com/phoenixlights.html
http://www.ufocasebook.com/illinoissightings.html
http://en.wikipedia.org/wiki/Stephenville,_Texas
http://www.ufocasebook.com/texassightings2008.html
http://en.wikipedia.org/wiki/Glenn_Dennis
http://en.wikipedia.org/wiki/Jimmy_Carter
http://en.wikipedia.org/wiki/Fife_Symington
Military witnesses
http://en.wikipedia.org/wiki/Walter_Haut
http://en.wikipedia.org/wiki/Charles_I_Halt
http://en.wikipedia.org/wiki/Larry_Warren_(Rendlesham)
http://en.wikipedia.org/wiki/Lord_Hill-Norton
The following are scientific articles mostly from wikipedia that may influence future space travel. If there is an extraterrestrial intelligence visiting earth they would have had to go through this process in the past. They wouldn't have relied on Hollywood to define space travel. They would have gone to the scientists. If they did rely on Hollywood to define space travel they never would have made it.
The following are UFO related websites including many that provide information that may be better organized than this page however they are still not organized as well as they could be.
The following are several lists of UFO sitings from different organizations followed by my list of the most promenent reports.
This is based on historical text that couldn't be confirmed. There are more sitings from that year fitting the same pattern.
Miracle at Fatima 1917
Los angelas California 1942 WWII air raid or UFO?
Roswell New mexico 1947
witnesses that deny incedent: Sheridan Cavitt
Kapustin Yar Russia 1948
Lubbock Lights Texas 1951
White House 1952
Rapid City North Dakota 1953
Vandeburg AFB California 1964
Incident at Exeter 1965
Kecksburg Pennselvania 1965
Dexter and Hillsdale Michagan 1966 led to Condon Report
Malmstom AFB Montana 1967 about 16 nukes disabled
Stefan Michalak Falcon lake Manitoba Canada 1967
Shag Harbor 1967
Delphos Kansas farm 1971 trace evidence investegated by Ted Phillips
Rash of Mexican sitings in 1974 including Governors press conference
Colares Island Brazil 1977
Rendelsham Forest England 1980
Belgium wave 1989-91
Lake Michigan 1994 Jack Bushong radar operator and police witnesses
Phoenix Lights Arizona 1997
Lebanon to Highland Illinous 2000
Stephenville Texas Dec. 2007/ Jan. 2008
List of witnesses