OTD…June 3, 1965 and the first American walk in space

#OTD in 1990…Discovery launched the Ulysses probe bound for the sun

#OTD in 2001…Discovery launched on an International Space Station crew exchange mission

Astronauts Christina Koch and Andrew Morgan floated outside the International Space Station Sunday and completed a 7-hour, 1-minute spacewalk to begin replacing batteries on the far left side of the research outpost’s solar array truss, the first of up to six excursions scheduled before the end of October.