Webb Detects Methane on Interstellar Comet 3I/ATLAS
Using the spectral data from the Mid-Infrared Instrument (MIRI) onboard the NASA/ESA/CSA James Webb Space Telescope, astronomers have detected methane on 3I/ATLAS. This is the first direct detection of methane in an interstellar object. Hubble captured this image of 3I/ATLAS on July 21, 2025, when the comet was 446 million km (277 million miles) fromContinue Reading












