The image was so ridiculous, and Cathal himself looked so ridiculously pleased with it, that Rosario found herself chuckling. "A time-travelling amoeba?" she suggested. "Poor guy woulda been incinerated soon as it got there, though. Those first microseconds after the Big Bang? It was so hot, even light couldn't shine. Particles couldn't form yet. Like, the laws of physics were so crazy warped, we're still tryna figure out how they even worked."
As she spoke, something in her posture seemed to loosen, her expression growing more animated. She was barely aware of it, or she might've tried to rein in her keen hand gestures, reminded herself to tone it down. "But yeah, there's some stuff scientists can use to extrapolate back. Like the cosmic microwave background, you know about that? It's the leftover heat radiation from the Big Bang, and it's everywhere."