Rudywalsh wrote:
If UFO,s are not alien spacecrafts then what are they?
An unidentified flying object, or UFO is any apparent anomaly in the sky that is not readily identifiable as any known object or phenomenon by visual observation and/or use of associated instrumentation such as radar.
A UFO is nothing more than an
Unidentified Flying Object.
Nothing has come from the study of UFOs in the past 21 years that has added to scientific knowledge...further extensive study of UFOs probably cannot be justified in the expectation that science will be advanced thereby. Choose the nearest star; decide how long you're willing to travel, how fast you will need to go to get there in that time, what you will have to take with you, and how many should be in the crew. Make it a one-way suicide mission if you wish. As a final step, calculate the kinetic energy that must be imparted to the spaceship to get you there in that time (one half the mass times the velocity squared.) I suggest you stay away from the relativistic limit; it complicates the calculation and won't help you anyway. The good news is that you will then sleep secure in the knowledge that UFOs from elsewhere in the galaxy are not subjecting humans to hideous experiments.
Or, to put it in simpler terms, with our present technology, it would take 28,000 years for a simple robot probe to reach the AB Centauri system, which is "only" about 4.37 Light-Years away.
UFOlogy is the mythology of the space age. Rather than demigods from Olympus or Valhalla, we now have Aliens From a Distant Planet (cue the theremin music). This mythology is solely the product of the creative imagination, propagated by people whose joy in life is to spread fear and doubt among the ignorant and gullible masses.