1. Vostok 6 Launch: The Soviet Union launched the Vostok 6 spacecraft, carrying the first woman into space, Valentina Tereshkova. She became the first woman to travel into outer space and also set the record for the longest single spaceflight by a woman at that time, remaining in space for over three days and completing more than 48 orbits of Earth.
2. American Astronauts in Space: On the same day, the United States achieved a milestone of its own. Astronaut James McDivitt and Navy Commander Edward H. White II were selected as the crew for NASA's second space mission. White was chosen to be the first American astronaut to perform an extravehicular activity (EVA), better known as a spacewalk. This spacewalk, which took place on June 3, 1965, during the Gemini 4 mission, was another pioneering moment in human space exploration.
