Impressive series So far we've only watched the first three episodes, but I'm impressed. The First reminds me very much of For All Mankind, an outstanding series on Apple TV+. Both have a science fiction background: The First concerning a first trip to Mars, For All Mankind asking the question, What if the Russians had got to the moon first? But at least as important are the characters and situations they find themselves in. Far from space opera (such as The Expanse) both series deal with real issues, as does all serious science fiction.
Acting is excellent and the characters credible (Sean Penn the by far the best known name). If the SFX are not in your face, they are still impressive and there are a few nice touches. Some imaginative filming too.
So far this series is taking its own time, with no cliff hangers at the end of the episodes, and that's fine by me. If you want missile attacks, races and aliens, look elsewhere. But if you like thoughtful science fiction, do try this.