Al-Farghani (Latinized Alfraganus) was a 9th-century astronomer from Farghana, in present-day Uzbekistan, and one of the towering figures of the Islamic Golden Age. Working in Abbasid Baghdad, he wrote the...
Light pollution astrophotography is the craft of capturing deep-sky images from skies washed out by artificial light—and yes, it genuinely works. Most astrophotographers...
Quick answer: Henrietta Swan Leavitt (1868–1921) was an American astronomer who discovered how to measure distances across the universe. Working at Harvard, she...
Quick answer: Vera Rubin (1928–2016) was an American astronomer who found the first convincing observational evidence for dark matter. By measuring how stars...
Quick answer: Hypatia of Alexandria (c. 350–415 AD) was a Greek mathematician, astronomer and philosopher who led the Neoplatonic school in Roman Egypt...
Polar alignment is the process of tilting an equatorial telescope mount so its rotation axis points exactly at the celestial pole — the spot the entire sky appears to turn...