وَجَعَلْنَا السَّمَاءَ سَقْفًا مَّحْفُوظًا ۖ وَهُمْ عَنْ آيَاتِهَا مُعْرِضُونَ ٣٢

And We made the heavens (i.e., the upper spheres of the earth) a secure roof (in order to save the inhabitants of the earth from adverse effects of fatal forces and aggressive waves shooting towards the earth from space), and they turn away from these signs (of upper spheres). (21:32)