Lightspeed: Year One

For a long time I thought I was the electron, spinning wild patterns around you. Then I realized the electron was you, because I always knew either where you were or how fast you were going, but never both.

So I left you and went to the stars, like you’d done. Alpha Centauri! The brilliant star burned into my mind. It was a vacation for me, a short time away from Earth. For the first time, I saw the lights up close. The luxury ship went 99% the speed of light. Much faster than you had gone, faster than before.

I figured you’d be dead once I got back. It simplified things. Stopped the fighting. You’d be ashes, like you’d always wanted. I wouldn’t even have to see your body. I thought about it, as I looked through the viewport, and realized that I was still thinking of you. That was when I understood that no matter how far I went or how fast, I still responded to you in every way.

Every action produces an equal and opposite reaction. Our bond pulls me back, and I love you.

Reasons why I have loved you:

1. Yes.

2. Yes, again.

3. Because you’re you.

None of these are love, perhaps, but they’re forces of physics. And if love isn’t subject to physics, then it has no grounding in our universe. I can’t believe that’s true.

Just when I got back, you left again, like one metal ball clacking another —the opposite side of our kinetic motion toy. You were off for the Andromeda Galaxy, moving at 99.38% the speed of light.

Simpler, indeed. I was sixty-eight. You were gone.

It was time to move on.

The world had changed since I left. The human lifespan was up to 150 years. I hadn’t imagined this possibility. I had decades left for music, art, whatever I dreamed of. My health was good—they killed a malignant breast tumor and grew me a new liver, twice—but otherwise, my body kept working for years.

But my nervous system paralysis—that was incurable. I opted for cryogenesis, hoping they’d find a cure. If they did, years from now, they’d revive me and heal me.

It was exciting. I wondered if it’d be hard to fall asleep, like Christmas Eve—not knowing what Christmas Day would bring. But of course the freezing was instant. As I lay down in the cryochamber I thought to myself: Reno. That’s where I should have gone, when disaster struck. I was thinking of you.

And then I was frozen, like Charon and Pluto.

If I’m a train leaving Philadelphia at 3:00, going 50 miles an hour, and you’re a train on the same track leaving San Francisco at 4:00, going 55 miles an hour, at what time will we collide and run each other off the tracks?

More importantly, if we move at the speed of light, and I shine a light in your direction, will you blink and tell me to stop blinding you, or will you not see me coming until it’s too late?

If Einstein is flying next to our train, looking into a mirror and wondering where his reflection has gone—will you ask him whether anything stands still, or if everything is always in motion? Relative to everything else, of course.

And ask about Reno. If our trains crash there, should we consider that they’ve stopped moving? Or are they still in motion on Earth, relative to everything else in the universe?

Everyone’s joined in the same future, except you. Time moves so quickly—accelerating to the point where we can hardly imagine what’s next. I went to sleep expecting to be cured. Instead, the AI woke me and said I no longer needed my body. It downloaded my mind, and now I see. You and I are eccentric, but part of a solar system, and I know now where we belong. It’s easy for me to travel along circuits, to expand my mind everywhere in the network—and then condense myself so small as to be negligible in the universe, here in one corner of a virtual city.

I see they’ve sent a ship after you, moving at 99.99% the speed of light. It’ll reach you eventually. They’ll download you and you’ll fly back to me. Here, where we belong. I think I never left your orbit.

I wrote you a long message to explain all this, but I think I’ll erase it and just leave ten words. I’ll tell you the rest when you arrive—when our perpetual motion comes to a relative stop.

THE CASSANDRA PROJECT Jack McDevitt

It’s an odd fact that the biggest science story of the twenty-first century—probably the biggest ever—broke in that tabloid of tabloids, The National Bedrock.

I was in the middle of conducting a NASA press conference several days before the Minerva lift-off—the Return to the Moon—and I was fielding softball questions like: “Is it true that if everything goes well, the Mars mission will be moved up?” and “What is Marcia Beckett going to say when she becomes the first person to set foot on lunar soil since Eugene Cernan turned off the lights fifty-four years ago?”

President Gorman and his Russian counterpart, Dmitri Alexandrov, were scheduled to talk to the press from the White house an hour later, so I was strictly a set-up guy. Or that was the plan, anyway, until Warren Cole mentioned the dome.