Kim Ho Yeap 葉金豪Kazuhiro HirasawaNisar, HumairaHumairaNisar2025-01-092025-01-0920209781799823810978179982383410.4018/978-1-7998-2381-0.ch001https://dspace-cris.utar.edu.my/handle/123456789/11195Radio astronomy studies the physics and chemistry of cosmic sources and cosmic phenomena at the radio wave spectrum. Radio telescopes are built to detect radiation within this spectrum. This chapter provides a historical walkthrough on the development of radio astronomy and radio telescopes. Significant discoveries and works pioneered by scientists in radio astronomy are highlighted. Nobel laureates who have led to groundbreaking contributions in this field are listed.Introduction to Radio Astronomy and Radio Telescopesbook-chapter