Titanium, which was named after the Greek god Titanes, has a lustrous white color when purified. The metal has a low density, good strength, excellent corrosion resistance, and it is easily fabricated. It is present in meteorites and the sun and is the only element that burns in nitrogen. The Rev. W. Gregor discovered it in 1789 while examining the mineral ilmenite. It was not until 1895 that it was partially purified by H. Moissan. Due to its excellent strength-to-weight ratio, most end-product applications of titanium metal are in the aerospace industry (the Boeing 777 contain 7 percent titanium on a flyweight basis and the 737 contains 4 percent). Titanium dioxide is used in paints, varnishes, and lacquers.