It was excellent! I could see the science was going to be good when the astronaut got rapture of the deep (nitrogen narcosis) and was threatened with the bends while testing the Venus EVA suit. Decompression problems are not usually associated with spaceflight, they could only happen at several atmospheres pressure with standard gas mixtures, and that stage was properly set up by the nature of the test exercise she was involved in. Someone did their homework, and as you mention, plot, acting and script were first-rate. I also noted the parallel story line to "Virtuality". It's almost too much to be a coincidence, yet they are different enough that I don't suspect plagiarism.

I am looking forward to the next episode.