well I am glad I did the now quaint and antiquated? 'visually observe all 9 planets in one night challenge' that the US S&T magazine used to regularly promote back in the 90's while they were all still planets
As someone has already said, its all about the anticipated rush of 'dwarf planet' planetisimals, planetoids, captured mega comets/Oort cloud/Kuiper belt/TNO's fringe dwellers whatever you call them
that is surely coming with ever deeper imaging and probes ect. 100 000 AU all the way out to the far edge of the Oort cloud I assume? is that not filled with millions of possible dwarf planets then???
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Originally Posted by Volans
Alot of people have been saying this in the discussions I've seen online. Pluto does not overlap or cross Neptune's orbit. At all times there is a huge gap between Pluto's orbital path and Neptune's. .
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I remember at least one period in the '90's when Neptune was the outermost planet for a while - I cant remember how often that happens now?
they should just qualify planets by what ever fringe dweller can visually pick up in his homemade 8" dob???