Recreating this effect

[Domokun]

Umm... you might overthinking this...
I'd just do a reverse version of it, and reverse it back with Tyflow retimer.

So basically, you just need particles shooting out from object, making them smaller over time (and deleting them), a little bit of wind turbulence, and making several shapes similar like above example, for use in the shape operator.
Then you just reverse it back
I don't see the need of collision, spawn, find target operators.

D4rk3lf 
Thank you for your response! I think you’re absolutely correct that I am overthinking this. I am also new to Tyflow. I’ll try a setup similar to what you mentioned. 
I haven’t used the Retimer but I’ll Google. To check if I’m following you. 
I’d setup say an object flow, my sun object or whatever surface as the birth object. Create a shape similar to the ones in the video and assign that to a shape instance operator for the particles. 
Have the particles start large and scale over time then play this in reverse with a retimer operator? 
For the particle scale over time do I just animate the scale value over x key frames in my 3D app OR is there an operator to do this?

Thanks again for your help. I’ll try this and report back. 
D