Well, 'Star Trek: Discovery' is a great streaming sci - fi option. It has amazing special effects and continues the long - standing 'Star Trek' franchise in a new and exciting way. 'Westworld' is also a top pick. The show delves deep into the concept of artificial intelligence and consciousness, with a very engaging and often mind - bending plot. Then there's 'Altered Carbon'. It's set in a future where consciousness can be transferred between bodies, which makes for a really unique and interesting story.
One of the best is 'Stranger Things'. It has a great blend of '80s nostalgia, mystery, and science - fiction elements. The Upside Down is a really cool and creepy concept. Another good one is 'Black Mirror'. Each episode is a self - contained story that often explores the dark side of technology and its impact on society. And 'The Expanse' is also excellent. It has a richly developed universe, complex characters, and interesting political and scientific concepts.
I think 'Doctor Who' is among the best streaming science fiction. It has a long history and a vast universe of stories. The Doctor's ability to regenerate means there are always new and different takes on the character. 'Sense8' is another good one. It's about a group of people around the world who are psychically linked, and it has elements of action, drama, and sci - fi. Also, 'Dark' is a great German - made sci - fi series. It's a complex time - travel story with a lot of mystery and family drama intertwined.