A team of astronomers, using the Spitzer Space Telescope, has reported the first extragalactic detection of the C70 fullerene molecule, and the possible detection of planar C24 (‘a piece of graphene’) in space. Letizia Stanghellini and Richard Shaw, members of the team at the National Optical Astronomy Observatory in Tucson, Arizona describe how collisional shocks powered by the winds from old stars in planetary nebulae could be responsible...
