If you trace out the Planet Mode of the Destroyer himself, it matches almost exactly with the outline of the cloud.
Bio-organics, Unicron is coming. That dead star is proof of it. How is it, you may ask? Well, the reasoning is simple. When a star dies, it leaves behind something your researchers call Dark Energy. It is speculated that if Chaos has a form, that Dark Energy would be it. With the type of intensity that that star used to give off (600,000 times more intense than your sun) it has produced enough Dark Energy to start His resurrection. The portal has opened and Unicron has stepped through, now it's only a matter of time before he's powerful enough to star the consumption of the Milky Way Galaxy.
ALL HAIL!!! AND MAY PRIMUS HAVE MERCY ON YOUR SPARKS!!!!!