A mathematician makes plans to travel backwards in time through a wormhole to a parallel universe when he can’t even make it to Mars with the fastest rocket on hand today.

Oh. Now you are not so afraid, then?”Kitty opened her mouth, indignant. “I was not afraid before! I was… shocked. How many times do you see your orphanage roommate be able to turn someone into...

But you mark my words: I will be there when everything you love is destroyed. Everything you didn’t even believe you would have.

It’s rather good to pretend to be normal with someone.

…the beginning and the end of time. These are the same thing, as everybody knows who came into this universe via a wormhole.

The fourth approved approach for the problem of frontally attacking a guarded wormhole was to shoot the officer who suggested it.

Instead, I opened my eyes to find the thing in front of my face, wafting dead horse breath across my chin and up my nose, its mouth like a gaping maw; its eyes, two giant...