That was quite funny. I think my point is that terms are not always as precise as people think they are.
As others have stated, there appears to be some kind of spectrum. Some of the inner planets have more in common with the moons of Jupiter and Saturn in some regards, than they do with Jupiter and Saturn themselves. For a start they have a surface that can be landed on. (Maybe not so much in the case of Venus or Io!!!)
Pluto's most obvious problem is that it is too similar in size to a large number of other objects. But it does have some resemblances to planets and larger moons. I'm not keen on the phrase "dwarf planet" because it makes me think of objects that are much smaller than Pluto is.
That was quite funny. I think my point is that terms are not always as precise as people think they are.
As others have stated, there appears to be some kind of spectrum. Some of the inner planets have more in common with the moons of Jupiter and Saturn in some regards, than they do with Jupiter and Saturn themselves. For a start they have a surface that can be landed on. (Maybe not so much in the case of Venus or Io!!!)
Pluto's most obvious problem is that it is too similar in size to a large number of other objects. But it does have some resemblances to planets and larger moons. I'm not keen on the phrase "dwarf planet" because it makes me think of objects that are much smaller than Pluto is.