On this day:

2011: Space Shuttle Discovery completes its final mission after its journey to International Space Station

1931: The electron microscope is invented by German physicist Ernst Ruska

Born on this day:

1934: Yuri Gagarin: Russian pilot, astronaut

Gone on this day:

1992: Menachem Begin: 6th Prime Minister of Israel, Nobel Peace Prize winner for bringing about peace between Israel and Egypt