Respost: Hello, was this some phenomenon from the sky or was it something human?

Hello, I’m from the north of the state of Rio de Janeiro in Brazil, a few months ago I was on duty at work when I started hearing some fireworks noises (explosions), but I didn’t give it much importance, as it’s common for fireworks to come back here, but 10 minutes passed since I noticed it and it didn’t stop, I decided to look around looking for the trail of fireworks and I didn’t find anything.

I decided to go out to the open area of ​​my work and look up, that’s when I saw some lights flashing. Some lights were intermittent and appeared in different colors, but there was also a static red light at the top of them, and there they continued for another 30/40 minutes, I even showed it to some friends from work, they found it curious too, and then it disappeared, as if they were weakening until they disappeared, I didn’t see them disappearing, I just saw the light getting weaker each time I went to see.

I did my research and there was no result, there was a decent answer, they made some guesses so let’s go:

1- it wasn’t a radio tower, there aren’t any radio towers there, it’s a huge open field, with nothing to get in the way, there aren’t any high voltage wires either.

2- Yes, there is an airport nearby, but it has almost no problems with flights and it wasn’t during business hours, it was around 9/10 PM, I doubt it was a plane waiting to land.

3-I doubt it was drones, as I was in a military sports area, there is nothing interesting to film there, it is small and only training camps, there were no events either to use.

If I were to deduce it would be satellites but I have no idea, I would like your opinion to satisfy my early morning curiosity hahaha.