"Radiation Formation of a Non-volatile Comet Crust" 13' x 15' x 9': Science papers, fake fur, glues, burning, audio system; 1999 — **"Radiation Formation of a Non-volatile Comet Crust"** 13' x 15' x 9': Science papers, fake fur, glues, burning, audio system; 1999

“Almost all the color in MacCallum’s recent work is the byproduct of processing material and surfaces… i.e., burning, melting, rubbing. In ‘Radiation Formation’…, holes burned in the wall hanging not only create an irregular pattern but also suggest debris and disintegration.”

— Cheryl Kolak Dudek, "A Marriage of Art and Science" in SURFACE DESIGN, Summer, 2000