I am not sure if this question would be appropriate on Physics.SE (or SE in general) so please redirect me if necessary.
I have been recently watching some of the International Space Station live stream and they appear to show some 'experiments' or 'tests' for most of the time.
For example they have been showing this for the past day:
Where it looks like some liquid sphere that gets mixed around creating dots (really fast, then slow - similar to a snow globe). However I have no idea what they are doing. The day prior to this, there was a thin wire with 3 small blobs along it, and every once in a while 2 robotic 'L' shaped arms would get near one of the blobs for a bit, then pull away, and then the wire would move around.
Here is an image of the other example I mentioned:
I have been searching for a source to explain this, however it is hard search for what can't properly be described. Is there any source available where I can learn what they are showing/doing and that can explain its significance (that is updated close to real time)? Or is the information about what is happening 'classified' or meant to be unknown to the viewer only to be released afterwards if in some article (if it was important)?
Link to live stream: here (You are able to watch previous events from the stream in the video's tab.) Note, it is not always an 'active' stream (You can also search on google for 'ISS live stream' and that link should appear)
P.S - When viewing this I have no audio and there does not seem to be any available closed captioning.