Where do the orbs in the sky come from?

The plasma orbs in the sky come from humans. DNA emits bio-photons - weak light. When this weak light crystalizes a plasma orb is formed. In order to form your own body of light you must enter a 100% dark chamber, like in the dolmens and pyramids.
The best manual how to form your own immortal embryo of light is the Taoist book The Secret of the Golden Flower and the fastest practices are Kriya yoga and Christian Hesychasm.