Question: what are two of the most important events in space exploration?
Answer: 4 October 1957 - The world's first artificial satellite. ... , 12 April 1961 - The first man in space. ... , 16 June 1963 - The first woman in space. ... , 18 March 1965 - First-ever spacewalk. ... , 20 July 1969 - First man on the Moon. ... , 7 February 1984 - 'Free-flying' in space. ... , 20 November 1998 - Assembly of ISS begins.