Toy_Soldier wrote:
Aircraft can appear to do odd things depending on their direction of flight in reference to you. While coming at you they can appear not to move, or move only very slowly. If they then make an abrubt turn they will appear to have suddenly accelerated dramatically.
The appearence of an aircraft can be deceptive as well. A light colored or metalic aircraft in particular will appear to grow or shrink in size and intensity depending on its position relative to the sun due to how this coloring greatly reflects the suns light. An aircraft can appear bright and large at a distance because it is at an angle that is reflecting the light and then appear to shrink and dim as it actually gets closer. Turns can also dramatically change its appearence.
The basic shape of an aircraft being cruciform also generates some shifting appearence as sometimes both fusilage and wings will reflect light together and sometimes only one or the other depending on its angle to the observer and the sun.
As an avid plane spotter myself I spend available time "skyfishing". I can cross off a number of spectacular aerial objects in our very clear southern skies that include the following;
kid's helium balloons
high altitude military aircraft leaving trails
hot air balloons
flocks of birds flying on thermals
stars particularly the planet Venus
satellites
moon
comets (these are really spectacular)
meteors (really cool)
large commercial aircraft (2nd most common)
small commercial and private aircraft (most common)
nightclub spotlights (on a cloudy night)
car headlights (on a cloudy night)
I'm fairly confident of cataloging pretty much everything
My interest in skyfishing stems from experiences I had between the age of 8 to 11 living on the west coast of Australia where frequently I would witness small orb shaped lights over the coastline back in the 1970s almost on a nightly basis. I was so confused that I convinced myself it was naval aircraft but as I became older I realised that they were not. It was weird nobody else seemed to notice these lights but I tended to see them in early mornng (around 3am) as I had asthma and insomnia.
I found a video on youtube that is almost exactly what I used to see over the ocean...still freaks me out when I watch this
http://www.youtube.com/watch?v=xzRTQ8Yaipw