"doorway" → portal, gateway, entrance.
Another thing to note is that some words might have similar synonyms. For example, "if" can be replaced with assuming. The Riftbreaker Torrent
Now, putting all together in the original text structure, replacing each word with syn2 while keeping proper nouns like "FRBs", "GRBs", "Riftbreaker Torrent", "particle accelerator" intact. "doorway" → portal, gateway, entrance
First, I need to go through each word in the text and think of three suitable synonyms. But wait, some words might not have direct synonyms. For example, "Studying" could be "Investigating", "Examining", "Analyzing". I need to replace each word in the sentences while maintaining the structure. Now, putting all together in the original text
Let me test this with a part of the text. Take the first sentence: "GRBs are massive explosions that occur when massive stars collapse or when neutron stars or black holes merge." The word "massive" appears twice here. For each occurrence, I need to find three synonyms. For the first "massive", maybe colossal. For the second "massive" in the same sentence, same substitution. Then "explosions" could be detonations, and so on. I need to be careful not to change any proper nouns like "GRBs" which stands for Gamma-Ray Bursts. Wait, are proper nouns in the text like "Wow! Signal" and "Tabby's Star" to be left as they are? Yes, the user said no changes to proper nouns, so those stay as is.
"Events" → occurrences, happenings, incidents.