Demo
    Technicians in clean suits inspect a large satellite inside a thermal vacuum testing chamber.
    NASA’s Orbiting Carbon Observatory-2 measures carbon dioxide levels across the world to improve understanding of the natural and human-induced sources of the gas as well as how emissions cycle through the Earth’s oceans, land and atmosphere. OCO-2 underwent environmental tests in December 2013 at Orbital Sciences Corp. (now Orbital ATK) in Gilbert, Arizona.
    A person's hand adjusting a large, iridescent lens mounted in a black square frame, situated on a metal surface.
    A diffraction grating has ridges spaced a fraction of a millimeter apart to splay light into spectra. This one was destroyed when the first Orbiting Carbon Observatory crashed in 2009.