Halley’s comet reaches the closest point to the earth since 1837, only 22 million km off.

Updated: 30 Sep 2019

How we know this

01Wallis, F. (2000). Nuusdagboek: feite en fratse oor 1000 jaar, Kaapstad: Human & Rousseau
02https://www.geocities.com/

Last updated · 30 Sep 2019

Cite this entry

South African History Online. (2012, May 18). Halley’s comet reaches the closest point to the earth since 1837, only 22 million km off.. South African History Online. https://sahistory.org.za/ref/E-0083640

South African History Online (2012) 'Halley’s comet reaches the closest point to the earth since 1837, only 22 million km off.', South African History Online, 18 May. Available at: https://sahistory.org.za/ref/E-0083640 (Accessed: 30 October 2026).

South African History Online, Halley’s comet reaches the closest point to the earth since 1837, only 22 million km off. [website], https://sahistory.org.za/ref/E-0083640, (accessed 30 October 2026).

"Halley’s comet reaches the closest point to the earth since 1837, only 22 million km off.." South African History Online, 18 May 2012, https://sahistory.org.za/ref/E-0083640. Accessed 30 Oct. 2026.

South African History Online. "Halley’s comet reaches the closest point to the earth since 1837, only 22 million km off.." South African History Online. May 18, 2012. https://sahistory.org.za/ref/E-0083640.