Comments by "Mat Broomfield" (@matbroomfield) on "What They Didn't Teach You at School about Planet Mercury | NASA's MESSENGER Discoveries" video.

  1.  @deanmuhl7417  I'd definitely care. nope, I probably would know the difference on all of it. Why - what's your point?
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  2. Wow, that video was a lot of effort to make. Good job!
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