It should be one of the things that Disney owns outright today (from having bought some but not all of Fox/News Corp), so Disney+ is the natural home, but that

It should be one of the things that Disney owns outright today (from having bought some but not all of Fox/News Corp), so Disney+ is the natural home, but that version of Cosmos was a very expensive show so between the "Disney Vault" and Disney again remembering they can get revenue from lending shows to other services it does seem to be off Disney+ for the moment. JustWatch says it is streaming on ad-supported Free service Tubi in the US right now: https://www.justwatch.com/us/tv-show/cosmos-a-spacetime-odyssey https://www.justwatch.com/us/tv-show/cosmos-a-spacetime-odys... (JustWatch is a too useful service at this point in the Streaming Wars to figure out where shows and movies currently are. I am getting to point of buying more Blu-Rays again, though, because there are too many services and many of the ad-supported ones like Tubi and Pluto are sometimes really obnoxious, and some of the paid services I have strong reasons I don't want to pay for them. I certainly have friends that have gone back to piracy, and it does sound more tempting as the Streaming Wars get worse.)