Recent content by fred20

I think some confusion over time is leaking in - sorry if I wasnt plain enough - By long term testing I'm not talking about drug manufacture. My curiosity is in the way GP's prescribe without any form of test and then keep on prescribing for years afterwards without any other intervention. I...

First - I'm not medically trained - this question comes about because of a relative being prescribed these. As I understand it ant-acid drugs neutralize the natural acids in the stomach the body makes naturally in order to digest food. Given my limited knowledge of basic chemistry I can see...

Thanks for the replies. Somehow I'm still not convinced. Something just doesn't feel right about this when I try to think through the life cycle of a comet. (A rolling stone... etc.) I can't see a comet being created through gravity at all. And I still can't see how an explosive creation would...

Thanks for the reply but this really just states my confusion ... This is how I see it - perhaps you can correct what I am getting wrong: A comet is a small object with low gravity so is unlikely to have formed just by gravity spontaneously - and is more likely to have been formed by ejection...

I was just watching the time-lapse footage of the Philae landing and was wondering: How does a comet acquire and keep a dust layer on it's surface? Can anyone say? It just seems a bit odd to me.