Rhenium is an extremely rare metal that eluded discovery until 1925, making it the last non-radioactive element to be discovered. Its name is derived from the river Rhine that runs through Europe. It is a tough, dense element with one of the highest melting points of all elements, surpassed only by tungsten and carbon. Rhenium's major application is in alloys that go into making jet engines, due to its strength. This elemental cat is ready to take to the skies and travel the world, or at least into your home.