Observations suggest comet spent billions of years on ‘vast unimaginable trajectories’ around our galaxy Observations suggest comet spent billions of years on ‘vast unimaginable trajectories’ around our galaxy An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is unlike anything ever before seen in our cosmic back yard, astronomers said on Monday. The comet 3I/Atlas is just the third visitor from beyond our solar system that