A nail-biting new science fiction thriller from Robert J. Sawyer; the all-time worldwide leader in award-wins as a science fiction or fantasy novelist.

"Well worth reading.-Analog Science Fiction and Fact

"Really great, a page turner. I was hooked from the beginning to the end."-Andre Bormanis, co-executive producer, The Orville and Cosmos

On the 75th anniversary of the dropping of the atomic bomb, Hugo and Nebula-winning author Robert J. Sawyer takes us back in time to revisit history...with a twist.

While J. Robert Oppenheimer and his Manhattan Project team struggle to develop the A-bomb, Edward Teller wants something even more devastating: a bomb based on nuclear fusion-the mechanism that powers the sun.

Teller's research leads to a terrifying discovery: by the year 2030, the sun will eject its outermost layer, destroying the entire inner solar system-including Earth.

As the war ends with the use of fission bombs against Japan, Oppenheimer's team, plus Albert Einstein and Wernher von Braun, stay together-the greatest scientific geniuses from the last century racing against time to save our future.

Meticulously researched and replete with real-life characters and events, The Oppenheimer Alternative is a breathtaking adventure through both real and alternate history.