A technician rolls a section of the fairing toward the clean room of the Orbital Sciences processing facility at Vandenberg Air Force Base.

A technician rolls a section of the fairing for NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, toward the clean room of the Orbital Sciences processing facility at Vandenberg Air Force Base in California.

The fairing will enclose and protect the spacecraft from the heat and aerodynamic pressure generated during ascent to orbit aboard an Orbital Sciences Pegasus XL rocket. After processing of the rocket and spacecraft are complete, they will be flown on Orbital's L-1011 carrier aircraft from Vandenberg to the Ronald Reagan Ballistic Missile Defense Test Site on the Pacific Ocean’s Kwajalein Atoll for launch in March. The high-energy x-ray telescope will conduct a census of black holes, map radioactive material in young supernovae remnants, and study the origins of cosmic rays and the extreme physics around collapsed stars. For more information, visit http://www.nasa.gov/nustar. Photo credit: NASA/Randy Beaudoin, VAFB