Return of the Sagan

.300 years ago, USS Carl Sagan blasted off from overpopulated Earth in search of survivalReturning to Earth, the USS Carl Sagan finds humanity now extinct and Earth populated by deadly, once extinct pre-historic predators. Another dynamic space fiction blockbuster from the master of space travel, Neil O'DonnellWhat disaster eradicated mankind? Was it man-made or of natural origin? One thing for survival for the USS Carl Sagan and its crew will difficult at best, as while humans are no longer inhabit the Earth , they left behind deadly machines to guard the airspace against space invaders. The commander and the crew of the returning Earth ship will have to overcome those unexpected fool-proof sentries. And the machines are not the only obstacles for the travel-weary men and women of USS Carl Sagan to overcome. If they want to re-inhabit Earth.