Comment by hermitcrab
7 hours ago
Did a bit more reading. I was thinking of a halo like an angel's halo, a disk with greater density near the edge and less at the center. But it seems that dark matter halos are roughly spherical with greatest sensity near the centre. In which case halo seems like a pretty poor name.
I wonder when exactly saints halos changed into rings in religious images. The older ones are all, well halo-shapped, but currently the only image people think of are the rings.
Probably from The Simpsons
I meant centuries old... I think the Renascence paintings still all have halos.
While I can fully believe The Simpsons will run for that time, they are still not there.