In addition to the two you mentioned, I've enjoyed 'cool worlds' by some prof. at Columbia University. He's a cosmologist (?) by trade, so lots of stuff about new planet discoveries, new detection techniques/tools. And he has a very soothing voice similar to Space Time - Good winding down before bed :-)
Edit: Ahh - its "David Kipping", Assistant Prof., Astronomy
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In addition to the two you mentioned, I've enjoyed 'cool worlds' by some prof. at Columbia University. He's a cosmologist (?) by trade, so lots of stuff about new planet discoveries, new detection techniques/tools. And he has a very soothing voice similar to Space Time - Good winding down before bed :-)
Edit: Ahh - its "David Kipping", Assistant Prof., Astronomy
He has a very boring voice that prevents me from watching or listening to any of his stuff.