{"id":"seligman2020evidence","DOI":"10.3847/2041-8213/ab963f","URL":"https://doi.org/10.3847/2041-8213/ab963f","type":"article-journal","title":"Evidence that 1I/2017 U1 ('Oumuamua) was Composed of Molecular Hydrogen Ice","author":[{"given":"Darryl","family":"Seligman"},{"given":"Gregory","family":"Laughlin"}],"issued":{"date-parts":[[2020]]},"year-text":"2020","container-title":"The Astrophysical Journal Letters","catalog-key":"SRC0CSKB77W65G2"}