Recent content by afennah

Nordic, I think you'll find you have that the wrong way round. Matter is not expanding! It is 'space' which appears to be expanding. If it was matter expanding then our galaxy would be getting bigger (which it's not). Matter is being 'carried' along with the expansion of space which is why...

In your comment you appear to be putting the Earth at the centre of your universe. I'm not sure that is a good idea but, your questions are relevant to what we are debating! Is the universe infinite or not. Some think yes others think no. I personally, do not believe it is infinite (Surely...

I think it's hard for us to imagine that: the universe could expand... without the need for something for it to expand into... but, maybe it does.

Hi Brain Dwarf, I don't agree with your reasoning (in your statement): 'because the universe is all there is...then it must be infinite'. Professor Brian Cox touched on the subject of 'Oblers Paradox' during his astronomy program this week. (BBC Stargazing Live, Pt1). He seems to believe (as I...

I've been reading about the study of galaxy 'rotation curves' (the rotational velocity about the galactic centre). The Dark Matter Problem by Robert H Sanders. In 1941, Subrahmanyan Chandrasekhar demonstrated that gavitational attraction between pairs of individual stars was negligible (within a...