Metánt észleltek a 3I/ATLAS csillagközi üstökösön, miközben új tanulmányok pontosítják a méretét
Scientists have directly detected methane in the interstellar comet 3I/ATLAS and found its nucleus is larger than expected, about 2.6 km wide, according to new preprints. The findings come from James Webb and Hubble observations in December as the comet dims and leaves the inner solar system. Methane, water, and nickel signals were observed. Only three interstellar visitors have been confirmed in the solar system.