Green Comet Sep 2025. Preparations are afoot for a green comet last seen during the stone age about 50,000 years ago and will be seen again at the end of this month. The comet is believed to come from the very.
A rare green comet nishimura, named after a japanese photographer ‘hideo nishimura’, will be visible today on 12 september 2023, after reaching the closest point to earth. This astronomy calendar of celestial events contains dates for notable astonomical events in 2025 including moon phases, meteor showers, eclipses, planetary alignments, occultations, oppositions, conjunctions,.