In order to understand the origin and evolution of comets, one must decipher
the processes that formed and processed cometary ice and dust. Cometary
materials have diverse physical and chemical properties and are mixed in
various ways. Laboratory experiments are capable of producing simple to complex
analogues of comet-like materials, measuring their properties, and simulating
the processes by which their compositions and structures may evolve. The
results of laboratory experiments are essential for the interpretations of
comet observations and complement theoretical models. They are also necessary
for planning future missions to comets. This chapter presents an overview of
past and ongoing laboratory experiments exploring how comets were formed and
transformed, from the nucleus interior and surface, to the coma. Throughout
these sections, the pending questions are highlighted, and the perspectives and
prospects for future experiments are discussed.Comment: 36 pages, 13 figures, Chapter accepted for publication on February
24th 2023, now in press for the book Comets III, edited by K. Meech, M.
Combi, D. Bockelee-Morvan, S. Raymond and M. Zolensky, University of Arizona
Pres