If something happens on any episode, something the people don't understand, their only conclusion is: wormhole... all invisible, nobody can see it. But the rockets they are firing almost in every episode will give data that they can't explain... so it has to be a wormhole.
Travis is the astrophysicist. He should be trying to see all the possible options but he is fixated on an area above the Triangle and he seems to be seems to be determined to fire as many rockets as possible, even if he gets weird readings, never the same, again and again.
I haven't seen any question answered on 4 seasons. They keep seeing flying objects but they haven't setup a device that can zoom 30X (like my little camera) and show a video with a better resolution.
Why nobody is digging anywhere in the Triangle is a mystery to me. There could be an object emitting radiation and affecting the area above the Triangle, but we will never know because nobody is digging.
The dramatic music and dramatic lines that every single person in the show are delivering doesn't make it much better. It looks rehearsed.