#OTD 10 July 1992, @esa's #Giotto flew by Comet Grigg-Skjellerup at ~200km, its 2nd #comet encounter @esascience https://t.co/vlc9imoGsC pic.twitter.com/Kc8FfLnUTl
— ESA space history (@ESA_History) July 10, 2017
Previous Post: Spiral Galaxy NGC 1512: The Nuclear Ring
Next Post: ESA Science on Twitter