How can A Stars is growth

Spitzer will present significant information on the structure and growth of stars and the circumstellar medium (surrounding the star). The discovery and characterization of circumstellar disks of gas and dust, signs of extra-solar planetary systems is one of the most important scientific goals of the Spitzer mission

Molecular gas

The giant molecular clouds are composed primarily of hydrogen, are the reserve materials from which stars form. 

Describe the Spitzer Telescope

About The Spitzer telescope is a reflector of lightweight Witchery-Chretien. Weighs less than 50 kg and is designed to operate at an extremely low temperature. The telescope has a hole of 85 cm in diameter. All parties except the support of the mirror are made of lightweight beryllium. Beryllium is a very strong material that works well in the construction of space telescopes infrared, because has a specific heat low to very low temperatures. The telescope is attached to the upper shell of the Crystal cooled by steam, which maintains the science instruments too cold.

Spitzer Space Telescope Technology

About the three main instruments of Spitzer and this Spacecraft has to be cooled a few degrees above absolute zero to function properly, and the spacecraft needs to operate at room temperature, sometimes these two main components are referred to as the portions "cold" and "warm" the Observatory.The following pages will give an overview of the technology that makes possible the science of the Spitzer mission.