Interstellar visitors are far rarer than asteroids or comets. In fact, at the time of ‘Oumuamua’s discovery, we had never seen an object that originated outside of our solar system pass through it. This distinction was quickly lost. A second interstellar object was discovered shortly after ‘Oumuamua was identified, and in the future, we are likely to discover many more, particularly with the Vera C. Rubin Observatory’s upcoming Legacy Survey of Space and Time (LSST).
