罗伯特·查尔斯·威尔森（Robert Charles Wilson），近年来最重要的加拿大科幻作家之一，自从长篇小说《隐匿之地》（A Hidden Place）入围菲利普·迪克奖之后，便逐渐确立起自己在科幻文坛的地位。他曾获得过四次雨果奖提名和一次星云奖提名，《时间回旋》夺得2006年雨果奖最佳长篇小说。

One night in October when he was ten years old, Tyler Dupree stood in his back yard and watched the stars go out. They all flared into brilliance at once, then disappeared, replaced by a flat, empty black barrier. He and his best friends, Jason and Diane Lawton, had seen what became known as the Big Blackout. It would shape their lives. The effect is worldwide. The sun is now a featureless disk--a heat source, rather than an astronomical object. The moon is gone, but tides remain. Not only have the world's artificial satellites fallen out of orbit, their recovered remains are pitted and aged, as though they'd been in space far longer than their known lifespans. As Tyler, Jason, and Diane grow up, a space probe reveals a bizarre truth: The barrier is artificial, generated by huge alien artifacts. Time is passing faster outside the barrier than inside--more than a hundred million years per year on Earth. At this rate, the death throes of the sun are only about forty years in our future. Jason, now a promising young scientist, devotes his life to working against this slow-moving apocalypse. Diane throws herself into hedonism, marrying a sinister cult leader who's forged a new religion out of the fears of the masses. Earth sends terraforming machines to Mars to let the onrush of time do its work, turning the planet green. Next they send humans...and immediately get back an emissary with thousands of years of stories to tell about the settling of Mars. Then Earth's probes reveal that an identical barrier has appeared around Mars. Jason, desperate, seeds near space with self-replicating machines that will scatter copies of themselves outward from the sun--and report back on what they find. Life on Earth is about to get much, much stranger.