Fix planets scaling

PlanetarySystem.c

@@ -146,7 +146,12 @@ void planetary_system_draw(PlanetarySystem *planetary_system) {
 
         uint32_t color = object->drawing_color;
         glColor3ub((color & 0xFF0000) >> 16, (color & 0x00FF00) >> 8, (color & 0x0000FF) >> 0);
-        draw_disc(scaled_position, object->drawing_disc_radius * planetary_system->zoom_factor);
+
+        if (planetary_system->zoom_factor < 1) {
+            draw_disc(scaled_position, object->drawing_disc_radius * planetary_system->zoom_factor);
+        } else {
+            draw_disc(scaled_position, object->drawing_disc_radius);
+        }
 
         if (i != 5) {
             glLineWidth(4.0);