mercredi 28 mars 2018

Dark matter or no dark matter? That is the question

In 2016, astronomers at Mauna Kea's Keck Observatory and the Gemini North telescope, discovered a distant galaxy composed almost entirely of dark matter...

https://phys.org/news/2016-08-scient...laxy.html#nRlv

Now, that same group of astronomers have discovered another distant galaxy, this time, almost entirely devoid of dark matter

https://phys.org/news/2018-03-dark-galaxy.html#nRlv

I mean, WT actual F? This seems to poke a rather large hole in the current theory of how galaxies form, i.e from blobs of dark matter.

When taken together, what are the implications of these two discoveries?


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