In 1817 – The first public gas streetlight in the US was lit in Baltimore, Maryland at the corner of Market and Lemon streets.
In 1915 – The first completely successful tests of the wireless telephone from a moving train were conducted on the Delaware, Lackawanna and Western Railroad. Spoken messages were clearly heard 26 miles from Lounsberry to Binghamton, NY.
In 1984 – Challenger astronauts Bruce McCandless II and Robert L. Stewart made the first untethered spacewalks.
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