This post is inspired by >>>/mlpol/59382.
I have been researching UFOs and aliens for decades. I have found the best way to understand the phenomena is to time-line it and then see what else was happening around the same time. Time-lining it allows the evolution & origin of certain aspects to show up which means you can trace things back to origin points.
I don't concern myself with if each UFO/alien report is real or not real, but I look at it in a wide ranging meta-view and this shows a sensible evolution which implies it is real and therefore the reports are generally mostly real.
I am not sure what the best way is to do this data dump. I have decided to do a succinct 300 year history which can be expanded on by me asking questions. This allows me to keep my efforts in proportion to actual board interest levels.
This initial section is to show the development of human sky technology and also shows that nothing ET UFO like is happening yet.
1758 - Book: Concerning Earths in the Solar System
, in which Emanuel Swedenborg detailed his alleged journeys (spiritual) to the inhabited planets (up to Saturn + 5 exo-planets), solar system barrier, suns are black.
1783 - France: Manned balloons
1803 - https://en.wikipedia.org/wiki/Utsuro-bune
1850 - and onwards triangular shapes are reported in the sky but when researched most of these can be associated with comets and comet fragments (comets tend to break up near Earth, Sun and Jupiter into sharp angular fragments).
1851 - Dr. William Bland sent design: steam engine driving twin propellers suspended under airship to Great Exhibition, LondonPost too long. Click here to view the full text.