One wonders, would a civilization inhabiting a planet circling one of the interior stars ever be aware of anything outside of their local cluster?
They’re not really as opaque as I led on. But from what I’ve heard, life could be impossible there anyway. For one thing, the stars are so crowded that they sometimes even merge, creating blue stragglers. But just a few near collisions would likely destabilize the orbits of any planets. For another, globular clusters are mostly population II stars, with low heavy elements. And they’re old stars, so any sun-like stars would have comparatively short life spans, and be dead now.