[perihelions]

My complaint's sort of the opposite of that: that it's superficially polished and fluid language that, if you examine it closely, lacks sense.

I don't think this was written by a thoughtful, careful human writer crossing language barriers. I suspect it's an LLM told to summarize a source material (i.e. the ISRO press release), reword it, and append extra filler language.

(Indeed, there are also some awkward English grammar issues – in the original ISRO press release, which the OP fixes).