Our universe is populated by black holes, ranging in mass across orders of magnitude. Last year, several large-scale experiments reported unprecedented accuracy in understanding the near-horizon geometry of black holes. These experiments, in particular GRAVITy, the event Horizon Telescope and the LIGO/Virgo collaboration, promise a wealth of data in the coming years. This new information will allow us to test General Relatvity in the strong field regime, to look for new physics or to simply understand the astrophysical conditions where black holes inhabit.
Vitor Cardoso reviewed the status of these observations in The hole picture, an invited News & Views article for Nature Reviews Physics.