Charles Sheffield

It was just before Summertide, the time when the twin planets, Opal and Quake, would orbit closest to their sun, subjecting both - Quake in particular - to vast tidal forces. It was to be the most violent Summertide ever, creating something that only happened every 350,000 years. Access to the...

Earth has been ravaged by galactic disaster - but the real devastation is yet to come. The end draws nigh…. The year is 2053, and Earth has barely recovered from the Alpha Centauri supernova that destroyed much of the planet’s infrastructure. Now the supernova's residual effect - a storm of...

The Zardalu are back.... The search for the Builders, the legendary alien race whose unfathomable constructs continue to perplex scholars and explorers alike, has led Builder expert Darya Lang, adventurer Hans Rebka, and treasure hunters Louis Nenda and Atvar H'sial to an unknown Builder...

For millennia, humankind and the other intelligent races have studied the bizarre and unfathomable constructs of the legendary beings known as the Builders. But for all that study, they are still no closer to figuring out who - or what - the Builders have been, or where they have gone. Then, on...