3 bright spheres in triangle formation that were radiating like small suns with yellowish color ( not exactly white)

I was driving home and about to turn into my driveway at around 11:20pm when I noticed the lights in the sky . They caught my attention due to there being 3 in a triangle position and the yellow color unlike the white stars . I stopped in the cul de sac and paused the car to study them. My car headlights were directly at them. They then began to move which frightened me so I shut off my lights ( as if they saw me) and continued to watch. One moved toward the other and blended into the other . As the movement started I thought perhaps I should take a picture but was too frightened to step out of the car so I took it through my front car window . Then the third one began moving toward the newly blended two until it joined into it as well. Now there was only one sphere for the next minute or two where it then just disappeared from sight.