Just a little half hour documentary about gamma ray bursts, fast radio bursts and gravitational waves, caused by neutron star collisions. And the scientists that detect them. Yes, if your flat Earth theory is correct these guys in the documentary are all in on the conspiracy.
https://www.youtube.com/watch?v=MnYPFMQNyL0Really? Do you actually think that these guys are just making it up, and are in collusion with a worldwide group of fake astrophysicists?
If so they must be very good actors

It's a cool doc, worth watching whatever your opinion.