Math & science · 2019

First black hole image

An Earth-sized radio telescope array photographs the shadow of M87's black hole.

The Event Horizon Telescope linked dishes on four continents with atomic clocks, reaching 20 microarcsecond resolution. Sagittarius A*, at our galaxy's centre, followed in 2022.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 4

Hard disk drive 1956
Atomic clock 1955
Radio astronomy 1932
General relativity 1915

Watch

Inside the black hole image that made history | Sheperd DoelemanTED · YouTube First Image of a Black Hole!Veritasium · YouTube