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I don't think so. Dark matter is needed to explain the contents / behavior of galaxies we can see. This article is talking about galaxies we can't see. On th
by strebler 10y ago
I don't think so. Dark matter is needed to explain the contents / behavior of galaxies we can see. This article is talking about galaxies we can't see.
On that note, here's some interesting / related recent news in terms of a galaxy we have a hard time seeing: https://www.washingtonpost.com/news/speaking-of-science/wp/2016/08/25/a-new-class-of-galaxy-has-been-discovered-one-made-almost-entirely-of-dark-matter/ https://www.washingtonpost.com/news/speaking-of-science/wp/2...
- dogma1138 10y agoIt's very important to note that unlike what the media reports, there is no new classification in astronomy of "dark matter galaxies" added due to this discovery. This is the original paper for Dragonfly 44 https://arxiv.org/abs/1606.06291 https://arxiv.org/abs/1606.06291 There are a lot of question about the composition of that galaxy, and what makes it so dimm, but we need a lot more observations of that galaxy in order to even start asking the right questions including full spectral analysis from multiple observations and tools, correct redshifting and depth placement, ensuring that there is nothing in the way that could explain why it is so dim and many more other factors. We also need to find other candidates of highly/ultra diffused galaxies in order to even start to try to figure out what is going on.
- strebler 10y agoYes I read the paper and I know what you mean, the media loves to jump to conclusions. Of course, they're also the reason I even found out about it. I'm super excited to read what comes from the future observations.