First, I need to go through each word and find synonyms. Proper nouns like "Big Bang Theory" should be left as they are since they're specific names. The user also mentioned "output text only," so no explanations just the revised text with synonyms in the specified format.
That Universal Radiation Band Background Emission big bang theory
Double-check for any typos or formatting issues with the v2 format. Ensure that each replacement is correctly placed and that the alternatives are semantically similar. If any word has few synonyms, maybe adjust for context. First, I need to go through each word and find synonyms
Another thing to watch for is parts of speech. If a word is a verb, its synonyms may be different from nouns or adjectives. For example, "discovered" is a verb, so the options should be other verbs like found. Also, numbers like "380,000 years" are not to be altered, and the years "1960s" should stay as they are. Another thing to watch for is parts of speech