This Expression will move the planets around the Spaceship based on the field's strength.
Apply this Expression on each planet's position:
//Getting the strength value of the force fieldvar reflectRadius =thisComp.layer("SPACESHIP").effect("DEFLECT RADIUS")("Slider");//Calculating the total distance between the layers and the distance on each axisvar lengthX = value[0] -thisComp.layer("SPACESHIP").transform.position[0];var lengthY = value[1] -thisComp.layer("SPACESHIP").transform.position[1];var distance =length(value,thisComp.layer("SPACESHIP").transform.position);//Calculating the angle between the layers,//this will allow us to get how much force will be applied into each axisvar angle =Math.atan2(lengthY, lengthX);var cosine =Math.cos(angle);var sine =Math.sin(angle);var moveRadius =ease(distance, reflectRadius,0, reflectRadius,0);//Applying the final value[value[0]+moveRadius*cosine, value[1]+moveRadius*sine];