The National Aeronautics and Space Administration (NASA) has successfully explored the dwarf planet Pluto. Once this mission was completed, the U.S. has now become the first and only country to have explored all of the planets within our solar system.
Everyone knows there is no oxygen in space. So how do the astronauts aboard the International Space Station (ISS) get their oxygen? The answer to this question is a little more complicated than one would expect.