2001 A Space Odyssey - meaning of ending?

I've seen it about 10 times - beautiful film, full of mystery - which is maybe the point, but does anyone have a solid idea about what happens in the transformation scene at the end, where the astronaut seems to become a baby floating in space, the size of a planet - and what does this have to do with the... show more I've seen it about 10 times - beautiful film, full of mystery - which is maybe the point, but does anyone have a solid idea about what happens in the transformation scene at the end, where the astronaut seems to become a baby floating in space, the size of a planet - and what does this have to do with the monoliths?
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