National Air and Space Museum, Smithsonian Institution
4 h
Training astronauts underwater may seem obvious now, but at the dawn of the space age it was rejected time and time again. It took a few dedicated people in a h...


Comentarios

On this day (February 21) in 2008, the USA-193 reconnaissance satellite was intentionally destroyed by the U. S. Navy.
The satellite was the first to be launched by the joint effort known as the United Launch Alliance, a Lockheed Martin-Boeing collaboration. Unfortunately, the mission proved to be a major failure when the satellite lost contact with the ground within hours. In January 2008, the problem got worse: orbital predictions showed that the satellite was expected to...



On this day (February 20) in 1962, John Glenn became the first American to orbit the Earth.
In order to join the first group of astronauts candidates had to meet seven criteria.
1. Test pilot school graduate
2. In excellent physical condition ...


NASA History Only the first 2 were sub-orbital. The remaining 4 orbited the Earth. See:https://www.nasa.gov/.../mercury/missions/program-toc.html
About Project Mercury
NASA.gov brings you the latest images, videos and news from America's space agency. Get…
NASA.GOV


On this day (February 19) in 1473, revolutionary astronomer Nicolaus Copernicus was born. Copernicus, in formulating a heliocentric model of the universe, provided the ignition for one of the most significant scientific revolutions in history—the aptly named Copernican Revolution. Un-tethered from the geocentric dogma of his times, Copernicus was able to start with a fresh slate and develop a more elegant heliocentric system of concentric circles, planetary orbits. Copernicus...