Have you tried Arthur Clarke? I would say he is close to Asimov in many ways, being from the same time. For others who share some similarities, though with a g

Have you tried Arthur Clarke? I would say he is close to Asimov in many ways, being from the same time. For others who share some similarities, though with a greater emphasis on character and adventure, perhaps Hal Clement, Larry Niven or Robert L. Forward.