People, when you watch documentaries and feel you could be watching the same thing as was broadcast on some other network, say PBS or BBC, it's probably true.
But that doesn't mean they are knockoffs and judging a DOC on that merit alone is not fair to the different networks. These networks co-produce a lot of documentaries, so that they don't have to do all the work themselves, as is the case with this DOC. It was co-produced by the BBC and the Science Channel. It says so in the credits, for both network's episodes.
I've seen DOCS that were co-produced by National Geographic, PBS, BBC, Arte, and even more including Canada's public TV (whose acronym slips my mind at the moment).
The different networks will release their own versions, and sometimes they can be a year or two off from each other based on the workload of that network. Each network will have their own narrator. Each will set the time of episodes based on how they do commercials, which tend to go something like, American releases other than PBS are 40 minutes long for an hour episode, PBS are around 50 minutes and BBC tend to be around 55 minutes.
I just checked "BBC Horizon Jupiter Revealed" released in 2018. The end credit, the VERY end credit that lists the network and year released says: A BBC Studios co-production with Science Channel.
Be fair people and understand how DOCs are made if you're going to leave comments about them or rate them.
