Oftentimes, the Lack of Vision Is Really a Sink of Power

Eridians didn't even discover stars until they had the technology to detect light and somth like that. They invented a whole bunch of space travel before they discovered what the hell was outside their own atmosphere. The uridians are kind of like a century or two behind us in jas of technology. Their planet, which is like eight times the size of ours, rotates in like six hours. So anyway, they are super duper protected from radiation. And they have pretty much no evolved defenses from radiation. But anyway, there is a method of my madness on deciding Eridians never invented relativity because it gave me a reason why they had so much extra fuel.