Hey @Janton, i'm glad you asked, and i'd be happy to try explain it in a nutshell for you (although i think a nutshell, is a bit too small, perhaps an old ammo can); besides that, i'm not the sharpest tool in the shed, but i'll try..

The study of the Universe must utilize known phenomenon on Earth, and observable phenomenon in space..
Today cosmology is built upon the principle of gravity, which we know very little about, and is a subject of much speculation.
suffice to say that Mainstream or "modern" Cosmology is a lot like all Mainstream Science it sticks to rigid timelines, rigid theories founded in ideals only; seemingly going out of their way to cram a square into a circle ..

• EU theory is obviously based on Electro-magnetism / electric phenomenon, which we actually know a great deal about..
• Electricity is "scaleable" and is Great for Experimentation!!
• Space is not a vacuum of nothingness it is actually electrically charged plasma, (mainstream scientists have to make up things like "dark matter", and give it imaginary properties that will help explain observable phenomenon)
• Electrical discharge powers our sun through Birkeland currents (an observable phenomenon); we even know it is powered from somewhere in the Orion Nebula.
• Electrical scarring on Mars and Earth is a little known fact (Thunderbolts even carved the Grand canyon).
• All of Mythology speaks of the Thunderbolts of the gods.
• There was Great upheaval in our prehistoric past involving comets, and thunderbolts.
• Even Volcanoes produce lightning bolts

i'm leaving a lot out but duty calls, talk to you later..