What's the origin and culture of funny astronomical terminology? I'm not in the industry myself, but as an interested member of the public the terminology of astronomy seems a bit funny. Astronomers who today talk publicly about the interstellar medium say that the solar system is in the "local fluff" inside the "local bubble" near a "local chimney". Cosmology uses a term like "the dark ages" to describe an era in the history of the phenomena they study. But geologists instead prefer to use terms like "cenozoic" to name a period. Early on, astronomers also used pompous words and names from antique languages. 


Was "Big Bang" (coined in 1949, I think) the term which started off this fluffy bubble blob bang type of terminology? Or were there precursors?
Is there a connection to sci-fi literature?
Are the "blobby bang fluff" words just a mass media ("reach out") construction which professional astronomers don't use at all even as quick references in conversations with colleagues?
Any causal claims or associations relating to language use are never going to be able to be proven, so the best answer to your overall question is: "nobody knows".

You can use Google's ngram viewer to visualise the appearance of a specific term or terms over time.

Perhaps astronomers generally have been better as a field in making their research more approachable by not pitching their discoveries in superior-sounding high-falutin sesquipedal pomposity. But it isn't universal; for every approachable 'Hanny's Voorwerp' there is an ancient-language-originating label like 'heliosphere'.

Geologists also use non-latin terms like "slip" and "fault" and "hanging wall". Is that to make geology more approachable for mass-media public reach-out PR?