Make Object Start In The Middle Of My Screen And Move To 1/4 Corner At Random

I want to be able to have something like 4 shooting stars start in the middle of my screen and shoot out to a random corner of the screen.
How would i accomplish this?
Is it a case of playing with angular velocity until i am happy or can i dictate a path? how can i stop it from shooting off to the side of my screen? i just want it to go to the top left right and botton left right

I hope that someone can see what i mean and possibly help me with this
Many thanks!

 

What is the shooting star? Is it an enemy or the main character?

 

The shooting star is an enemy

 

dirty solution
1. in the center put your star add spawner
2.next to it add another object make it transparent and decoration with high angular velocity
3. connect to the rotating object four transform logic with liner velocity x y to shoot each child to the proper corner (left top may be like -15 15)
4. on each corner set another logic to stop the star