A dangling modifier is a part of a sentence that doesn't quite fit in - it may trick you into thinking that it refers to something which it actually doesn't refer to. For example, here, the dangling modifier can be found in sentence C. After reading the essay, the point was still unclear. Who read the essay here? Was it the point? - Of course not, there is just a dangling modifier.
The author was clearly using sarcasm. i know this cause in the question it says only and compares it to a different planet, and we know planets are not a mile close