~ A nebula is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, nebula was a general name for any extended astronomical object, including galaxies beyond the Milky Way

~ The Carina Nebula is known by several names: the Great Nebula in Carina, Eta Carinae Nebula, and NGC 3372. The nebula includes several O-type(blue) stars. Eta Carinae and HD 93129A are two of the most massive stars in the Milky Way galaxy. The nebula is estimated to be between 6,500 and 10,000 light years from Earth. The nebula is located in the Carina constellation.