A bit off topic, but I really feel like this type of "article" adds absolutely nothing to the video. I'd prefer to be linked directly to the video rather than give away a pageview to an entity that isn't even producing its own content.
I disagree. I don't typically watch a video linked on the internet unless I know what it's going to be about. The article let me evaluate the content of the video to determine that I wanted to go ahead and hit play.
With some videos, a bit of context is helpful, but I don't think it was in this case; the text didn't give us much more info than the title. I think Chris Hadfield's videos with the CSA are pretty well-known by now (I have seen several on HN, Reddit, etc.), so I think people would know what they were getting into without the article if the title had been a bit more specific. Granted, with HN's char limit, that isn't always possible.
I, for one, like to know a little more about what I'm getting into before I watch a video. A video seems like a bigger time commitment than reading some text. If you sent me straight to YouTube, I'm much more likely to just ignore it.