NASA’s James Webb Space Telescope is finding clues that are leading scientists closer to understanding the origins of the interstellar comet 3I/ATLAS. Using the advanced space observatory, astronomers found unique ratios of carbon and heavy hydrogen in 3I/ATLAS that have never been found in native comets inside our own solar system.

More info here: https://www.space.com/astronomy/comets/nasa-looks-for-the-origins-of-interstellar-comet-3i-atlas-space-photo-of-the-day-for-june-24-2026