NASA’s SPHEREx Detects Organic Molecules In Interstellar Comet
NASA’s SPHEREx space telescope has delivered new insights into interstellar comet 3I/ATLAS, only the third such object ever observed passing through the solar system. Observations made in December 2025 revealed a rich mix of organic molecules and heightened cometary activity, strengthening scientific understanding of material formed beyond the Sun’s influence. Infrared observations of a rare interstellar visitor The NASA’s SPHEREx mission turned its infrared instruments toward comet 3I/ATLAS shortly after it passed closest to the Sun. Scientists detected organic molecules including methanol , cyanide and methane. While these compounds are central to biological processes on Earth, researchers emphasise that such molecules can also form through non-biological processes in space. Post-perihelion brightening and cometary activity Mission scientists reported a dramatic increase in the comet’s brightness nearly two months after its closest approach to the Sun. This delayed surge is lin...