On February 3, 2006, astronauts at the International Space Station sent an empty spacesuit tumbling through space all by itself … for science. [‘On This Day in Space’ Video Series on Space.com](https://www.space.com/39251-on-this-day-in-space.html) Known as SuitSat, this empty spacesuit was equipped with a radio transmitter that would constantly broadcast pre-recorded messages from scientists and students from […]