Finally, there is a Nobel Prize for black holes. There is much to unpack in this award. First, it only gets awarded after the death of Stephen Hawking, but there is a logic to this: Nobel wanted experimental verification and hence the essential inclusion of Genzel and Ghez in this prize. The maximum number of award recipients is three.
Most significantly, it was Roger's first paper on black hole singularities that showed the presence of singularities in General Relativity were an unavoidable "feature." Stephen joined in this work somewhat later with cosmological singularity theorems ... and then Roger and Stephen continued on to develop the mathematics that underpinned the paradigm shift that took black holes from being unphysical pathologies to features of the natural world, as predicted by General Relativity.
For me, the irony is that there is now a lot of theoretical evidence (which started with Stephen's discovery of Hawking Radiation and his formulation of the Information Paradox) that the black hole, as described by General Relativity, is fundamentally and deeply flawed. The description in General Relativity is perfect for most of today's astrophysics, but once one starts thinking about the quantum structure of black holes, it all falls apart.
So it is great that Nobel Prize has been given for black holes .. especially after the 2017 Nobel for the discovery of gravitational waves (and another triumph of General Relativity). However, for black-hole theorists, this is like giving the 2020 Oscar for Best Picture to Lawrence of Arabia. This was an incredible triumph of the 1960's framed in the understanding of 1960's paradigms .... but the world and, and our understanding of it, is now so much deeper and more evolved.
Nevertheless, my heartfelt congratulations go to Roger Penrose, Reinhard Genzel and Andrea Ghez, for work that changed our understanding of the universe ...