2061 - Odyssey Three: Arthur C. Clarke

In 2061, when two Suns share the skies of Earth, Halley's Comet returns to the inner Solar System. Soon the fates of two spacefaring expeditions are entwined by human necessity and the immutable laws of astrophysics. Centenarian Heywood Floyd must again confront Dave Bowman, a newly independent HAL and the limitless power of an alien race that has decided humanity must play a part in the evolution of the galaxy - whether it wants to or not...Cover at by Michael Whelan.