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puzzled by "new" confirmation of dark energy
Just saw an article on BBC:
http://www.bbc.co.uk/news/science-environment-13462926
that says they have used a new technique to confirm the existence of dark energy. I don't know enough to understand why what they did is "new", as I am sure I recall reading previously that the techniques they used have been discussed before. On the other hand, since both types of observations have to do with the formation of galaxies and clusters, I may have seen the discussion in regards to dark matter, not dark energy, or maybe this is a refinement of techniques and the BBC is just calling it new.
Would appreciate any informed comments on the news.
Thanks
Just saw an article on BBC:
http://www.bbc.co.uk/news/science-environment-13462926
that says they have used a new technique to confirm the existence of dark energy. I don't know enough to understand why what they did is "new", as I am sure I recall reading previously that the techniques they used have been discussed before. On the other hand, since both types of observations have to do with the formation of galaxies and clusters, I may have seen the discussion in regards to dark matter, not dark energy, or maybe this is a refinement of techniques and the BBC is just calling it new.
Would appreciate any informed comments on the news.
Thanks