1) The first man to fly into space was Yuri Gagarin.
2) The second man to travel into space was Alan Shepard.
3) The first woman to fly into space was Valentina Tereshkova.
4) The first man to walk in space was Aleksey Leonov.
5) The first astronaut to walk on the Moon was Nail Armstrong
6) The first people to fly a plane were the Wright Brothers.
7) The first person to invent the radio was Guglielmo Marconi.
8) The first person to invent the telephone was Alexander Bell.
9) The first scientists to discover radium were Marie and Pierre Curie.
10) The first explorers to discover Antarctica were Fabian Gottlieb von Bellingshausen, Edward Bransfield and Nathaniel Palmer. It's hard to confirm who was the first to discover Antarctica, according to various sources, these three men all sighted Antarctica within days or months of each other.
11) The first person to reach the South Pole was Roald Amundsen.
12) Ferdinand Magellan is often credited as being the first person to sail all around the world, however, he was killed halfway through. It is believed that Juan Sebastian Elcano, who took control of the expedition after Magellan’s death, was actually the one to voyage around the world.