Mysterious ‘alien’ interstellar comet 3I/ATLAS could be twice as old as the sun

This series of images from NASA’s Hubble Space Telescope of the fragmenting comet C/2025 K1 (ATLAS) was taken over three days (Picture: NASA, ESA, Dennis Bodewits (AU)/Cover Images)An interstellar comet that passed through the Solar System last year may be up to 12 billion years old – far older than the sun.Scientists used the NASA/ESA/CSA James Webb Space Telescope to examine Comet 3I/ATLAS after it visited our galaxy in late 2025.
As the comet moved away, heat from the sun transfo