The argument you describe is as if Neil deGrasse Tyson took a course about “How to be even more extremely and inappropriately pedantic,” and decided he wanted to become the undisputed world expert at that.
Anyone who says “exoplanets aren’t planets” really needs to think a little harder about the actual meaning of what they’re saying.
Anyone who says “exoplanets aren’t planets” really needs to think a little harder about the actual meaning of what they’re saying.