Tau Zero

This Hugo Award finalist, “justifiably regarded as a classic” (SFReviews.net), is the tale of an epic space voyage where time dilation goes horribly wrong.
 
Aboard the spacecraft Leonora Christine, fifty crewmembers, half men and half women, have embarked on a journey of discovery like no other to a planet thirty light-years away. Since their ship is not capable of traveling faster than light, the crew will be subject to the effects of time dilation and relativity. They will age five years on board the ship before reaching their destination, but thirty-three years will pass on Earth. Experienced scientists and researchers, they have come to terms with the time conditions of their space travel.
 
Until . . . the Leonora Christine passes through an uncharted nebula, which damages the engine, making it impossible to decelerate the ship on the second half of their trip. To survive, the crewmembers have no choice but to bypass their destination and continue to accelerate toward the speed of light. But how will they keep hope alive and maintain order as they hurtle deeper into space with time passing more and more rapidly, and their ultimate fate unknown?
 
With its combination of mind-blowing hard science and compelling human drama, Tau Zero is “the ultimate hard science novel” (Mike Resnick).
 

Poul Anderson (1926–2001) grew up bilingual in a Danish American family. After discovering science fiction fandom and earning a physics degree at the University of Minnesota, he found writing science fiction more satisfactory. Admired for his “hard” science fiction, mysteries, historical novels, and “fantasy with rivets,” he also excelled in humor. He was the guest of honor at the 1959 World Science Fiction Convention and at many similar events, including the 1998 Contact Japan 3 and the 1999 Strannik Conference in Saint Petersburg, Russia. Besides winning the Hugo and Nebula Awards, he has received the Gandalf, Seiun, and Strannik, or “Wanderer,” Awards. A founder of the Science Fiction & Fantasy Writers of America, he became a Grand Master, and was inducted into the Science Fiction and Fantasy Hall of Fame.

In 1952 he met Karen Kruse; they married in Berkeley, California, where their daughter, Astrid, was born, and they later lived in Orinda, California. Astrid and her husband, science fiction author Greg Bear, now live with their family outside Seattle.