There are (1-10) "planets" in orbit, and 3 are in "Comet" zones (ellipses). "Comets" according to the laws of physics,begin to gravitate toward the "planets" and their orbits will be altered. At the same time they leave a trail (so-called tails), that trace varying curves through the sky.
لكم مني خالص وارق وأعذب تحية دمتم في حفظ الله
المواضيع المتشابهه 
شاشة التوقف والخلفية المتحركتان الفضائية Universe Screensaver v1.0 
العرض الشجري
