Tag: Moon

Lunar Formations and Astronomers from Muslim Civilisation

by Salim Al-Hassani - 1001 Book Chief Editor Published on: 30th May 2025

The article highlights how several lunar formations are named after prominent astronomers from the Muslim civilisation, acknowledging their significant contributions to the field of astronomy. First initiated in the 17th century by Jesuit scholar Riccioli…

Ibn al-Zarqalluh’s discovery of the annual equation of the Moon

by S. Mohammad Mozaffari Published on: 9th February 2024

Ibn al-Zarqālluh (al-Andalus, d. 1100) introduced a new inequality in the longitudinal motion of the Moon into Ptolemy’s lunar model with the amplitude of 24′, which periodically changes in terms of a sine function with…