Is this Dark Matter?
The meteor that hit Russia yesterday appeared to explode sending out a massive arc of white light. It appeared to be lighting up the air around it progressively and in increasing phases until the air around it was completely white. Conversely, the colour of buildings appear almost unaltered. This suggests that extreme energy such as that witnessed yesterday from the meteor hitting our atmosphere could turn dark matter momentarily luminous or cause dark matter to react in a manner to make it visible. It certainly seemed that "everything" within this arc was lit up.
Could this mean that dark matter is free moving (water, air) rather than solid objects and if so that Dark matter plays a part in the density of the subject, so more dark matter - air, some - liquids, little - stone etc.
I guess I am as far away from the truth as D14 from Cornwall but its worth a punt..
G