{"id":"roth2026enriched","DOI":"10.1038/s41550-026-03002-5","URL":"https://arxiv.org/abs/2603.20445","type":"article-journal","title":"An Enriched Methane D/H Ratio in the Interstellar Object 3I/ATLAS","author":[{"given":"Nathan X.","family":"Roth"},{"given":"Martin","family":"Cordiner"},{"given":"Stefanie","family":"Milam"}],"issued":{"date-parts":[[2026]]},"container-title":"Nature Astronomy","catalog-key":"SRC0DFPWGSFZ0SM"}