When Neil Buckland, an artist based in Seattle, met a geologist named Tony Irving a few years ago, he had no idea it would launch an extraterrestrial collaboration. Buckland was at the University of Washington photographing ultrathin slices of meteorite for a project Irving was working on. The cut space rocks didn’t seem particularly exciting at first. Then Buckland peered at the 30-micron-thick samples through a pair of polarizing filters. He was stunned by the vibrant collage of hues.