Pictures made by observational astronomers, like the one I featured a couple of days ago, often feature on various sites as “Astronomy Pic of the Week” or such. I’ve often thought that this disadvantages astrophysicists of the more theoretical sort and wondered why don’t we do same with graphical illustrations of other kinds. On that basis, I offer this (found here) as my inaugural Astrophysics Plot of the Week:
Its explanatory power is matched by its simplicity and elegance.
In the Dark 