# The Interstellar Comet That Showed Us Its Billion-Year-Old Interior: Then Started to Empty - slug: the-interstellar-comet-that-showed-us-its-billion-year-old-interior-then-started-to-empty - date: 2026-04-24 - category: Space & Aerospace The methane was hiding under an ancient radiation-baked crust. Twelve days of JWST observations: nearly half of it was gone. ---