Take a tour into the heart of SOFIA, the world's largest airborne observatory. SOFIA Stratospheric Observatory for Infrared Astronomy is an extensively modified Boeing 747SP aircraft that carries a 100-inch (2.5 meter) reflecting telescope with the ability to study astronomical objects and phenomena, including star birth and death, the formation of new solar systems, black holes at the center of galaxies, and complex molecules in space. Video: http://go.nasa.gov/2g0QnBS | NASA - National Aeronau