Dark Matter May Be Half Previous Estimates
Sunday, October 12, 2014 - 18:20
in Astronomy & Space
Dark matter is ill-defined and never detected so how can a group of astronomers say current measurements are off by 100 percent? Most of the matter in the universe is hidden. It's not stars, it's not planets, it's not dust. No one knows what it is. But it must be something or gravity does not work. That something is the mystery. Using inference, if 4 percent of the universe is matter, and around 25 percent is dark matter (what is the rest? Dark energy, an even more fanciful conjecture) then the 'weight' of dark matter just in our galaxy is 800,000,000,000 times the mass of the Sun, say a group of Australian astronomers who used a method developed almost 100 years ago for their estimate. read more