The slow zone—gates, Medina Station, and the alien hub station with the rail guns—was only tiny if compared to the vastness of normal space. The whole volume was smaller than the sun, and with the guesses she’d seen about how much energy it took to hold the gates open and stable, probably equally energetic, but controlled by forces they were still struggling to make sense of. And between the gates, a darkness that matter and energy slipped into, but from which nothing ever came back. The not-emptiness past the gates left her feeling a little claustrophobic, with only a sphere a million klicks
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