Technicians at Vandenberg Air Force Base in central California are placing the two halves of the rocket nose cone, or fairing, around NASA's Nuclear Spectroscopic Telescope Array (NuSTAR), in preparation for its launch.

The launch is scheduled for no earlier than March 21.

The fairing will hold the observatory safely in place atop its Orbital Sciences Corporation rocket, a Pegasus XL.

The rocket will blast off from the L-1011 "Stargazer" aircraft, also from Orbital, near Kwajalein Atoll in the central Pacific Ocean.

During its ride to space, the fairing will split open like a clamshell, exposing NuSTAR before it is ultimately carried to its final orbit around Earth.

The fairing installation is a two-day process scheduled to be completed on Saturday, March 3.

NuSTAR will study everything from our sun to massive black holes buried in the hearts of galaxies.

It will be the first space telescope to capture sharp images in high-energy X-rays, giving astronomers a new tool for understanding the most energetic objects and events in our universe.