[canoe.com] You would be wrong.

@Lilith -- No, I wouldn't be wrong. I didn't say anything to be wrong about.

It is indeed fascinating that one galaxy out of the millions we have observed appears to be without the influence of dark matter, but it does not set a trend. It is rather an anomaly worthy of further study. Because NGC1052-DF2 shows stellar motion that indicates there is a lack of dark matter surrounding it does in no way suggest that the void you mention lacks dark matter.

Now, about this galaxy, scientists have taken to social media and the arXiv science paper server to discuss the scant data used to make their rather extreme conclusion. In other words, their tiny data set is hardly reliable and further study is required. What one gets off of sites such as Canoe<dot>com is rarely researched for accuracy. Good science demands skepticism and caution.

“The idea we were seeing a strong signature of a dark matter-free system seems incorrect,” said Michelle Collins, astronomy lecturer at the University of Surrey in the United Kingdom.

[arxiv.org]

[arxiv.org]

The only find that shows such an indication is that found by Lawrence Rudnick and colleagues of the University of Minnesota in Minneapolis. Signals from this particular void seem to indicate that dark matter is either not present or extremely sparse. The important operator here is that it 'seems to indicate' and not that there definitely is a lack of dark matter. To make that determination is going to require a lot more study and a careful remapping of the zone. This zone is the largest void found as far as I know.

However, the zone they studied is just 1bly in diameter and is located within the WMAP. Is this the void you were talking about? Its distance is between 6bly and 10bly.

Wakey wakey! [facebook.com]

@Lilith -- That was fun.

Yes

[canoe.com]

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