Born in 1937, Meier attests that his first other-worldly encounter occurred during childhood and continued, off-and-on, for decades. And in 1975, Meier set out to photograph his experience. Sotheby’s Space Photography Online auction includes three groups of Meier’s photographs, with between four and seven photographs in each group. These collected photographs, shot by Meier, purport to depict an interstellar visit by a spacecraft from the planet Erra.