On this day in history: In 2001, Canadian astronaut Chris Hadfield began his second spaceflight as the shuttle Endeavour was launched. On the fourth day of the 13-day mission, Hadfield became the first Canadian to walk in space. Here, Hadfield waves during the crew walk out for mission STS-100 aboard Endeavour at the Kennedy Space Centre on Thursday, April 19, 2001. (CANADA NEWS WIRE PHOTO/Canadian Space Agency) Article content On this day, April 19, in history: In 1529, eight years after the Diet of Worms was convened by the Holy Roman Emperor, a protestation was published against it by several cities including Strasbourg, Nuremberg and Ulm, and from that evolved the term Protestant.