Adapting numerous books into a single series presents considerable challenges, particularly given the expansive timeframe of one thousand years covered within them. This isn't necessarily a show for all audiences when you consider that Isaac Asimov was not only an accomplished science fiction author but also a forward-thinking figure nearly a century ahead of his time. It tends to elicit strong reactions, especially when comparing the filmed streaming series with the original seven books—two sequels and two prequels—that comprise the complete saga. Don't expect to become deeply invested in every character, as many are destined not to survive the extensive timeline of the initial trilogy. The written material possesses a remarkable quality; they’re enchanting, intricate, and go beyond what is typical – if you enjoy the series, I suggest reading them yourself. There are noticeable alterations, naturally, but attempting complete accuracy would fall into the category of an unfilmable book. The cast delivers excellent performances, and Apple's investment in this production—roughly 70 million dollars per episode—is on par with a major motion picture budget, resulting in impressive CGI and sound design best experienced in IMAX. If you appreciate genuine science fiction, I recommend watching it; my rating is 8.7 out of 10 / A.

Source on TMDB