Found: a “fluffy” galaxy made from 99% dark matter

http://www.extremetech.com/wp-content/uploads/2016/08/KeckTelescopes-hi-768x424.png 768w, http://www.extremetech.com/wp-content/uploads/2016/08/KeckTelescopes-hi-640x354.png 640w, http://www.extremetech.com/wp-content/uploads/2016/08/KeckTelescopes-hi-106x59.png 106w, http://www.extremetech.com/wp-content/uploads/2016/08/KeckTelescopes-hi-672x371.png 672w, http://www.extremetech.com/wp-content/uploads/2016/08/KeckTelescopes-hi.png 1075w" sizes="(max-width: 300px) 100vw, 300px" />Scientists working with the Gemini North and Keck II telescopes have discovered a galaxy that’s made from 99.99% dark matter. And they noticed it because it was “fluffy.”