The hole picture
arXiv:1910.04173 · doi:10.1038/s42254-019-0119-2
Abstract
Because of the very definition of black holes --- no light escapes them and falling objects get infinitely faint when approaching --- it is impossible to ever prove that they exist. However, electromagnetic and gravitational-wave observatories have now `seen' black holes. Datasets from these observations, released in 2019 and late 2018, give important hints about the environment, origin and growth of black holes.
3 pages, invited News & Views article for Nature Reviews Physics
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