Establishment of the Prime Meridian in London

Who established the Prime Meridian in London, England?

a. Marco Polo b. Ptolemy c. George Airy d. Piri Reis

Answer:

The Prime Meridian in London, England, was established by George Airy, who served as the seventh Astronomer Royal.

The establishment of the Prime Meridian in London, England, is attributed to George Airy. Thus, the correct answer is George Airy. He was the seventh Astronomer Royal from 1835 to 1881 and was responsible for defining the Prime Meridian at the Royal Observatory, Greenwich in London. This became the global standard for zero degrees longitude, effectively organizing global navigation and timekeeping.