September 11, 1985 The International Cometary Explorer passes through the gas tail of comet P/Giacobini-Zinner, the first ever man-made object to pass through the tail of a comet. International Cometary Explorer Passes Through Comet is original content of This Day in Tech History. This Day in Tech History Tech History provided by This Day in Tech History.com

September 11, 1985 The International Cometary Explorer passes through the gas tail of comet P/Giacobini-Zinner, the first ever man-made object to pass through the tail of a comet. This Day in Tech History Tech History provided by This Day in Tech History.com

September 11, 1985 The International Cometary Explorer passes through the gas tail of comet P/Giacobini-Zinner, the first ever man-made object to pass through the tail of a comet. Previous post: The First Internet Search Engine This Day in Tech History Tech History provided by This Day in Tech History.com

September 11, 1985 The International Cometary Explorer passes through the gas tail of comet P/Giacobini-Zinner, the first ever man-made object to pass through the tail of a comet. Previous post: The First Internet Search Engine This Day in Tech History Tech History provided by This Day in Tech History.com

September 11, 1985 The International Cometary Explorer passes through the gas tail of comet P/Giacobini-Zinner, the first ever man-made object to pass through the tail of a comet. This Day in Tech History

September 11, 1985 The International Cometary Explorer passes through the gas tail of comet P/Giacobini-Zinner, the first ever man-made object to pass through the tail of a comet. Previous post: The First Internet Search Engine This Day in Tech History