public static void EulerToStar(List<Particle> particles){
		float t = 0.05f;
		for(Particle particle : particles){
			particle.getVelocity().Add(Vector3D.Scale(particle.getForce(), t));
			particle.setPosStar(Vector3D.Add(particle.getPos(), Vector3D.Scale(particle.getVelocity(), t)));
		}
	}