A relic from the beginning of the galaxy has finally come out of the sun's shadow. It gives us a rare look at a cosmic history that goes back before our own world. In November 2025, the interstellar comet 3I/ATLAS began its long-awaited journey back towards the outer Solar System. This caused a lot of excitement among astronomers and space agencies.
The Asteroid Terrestrial-impact Last Alert System (ATLAS) in Chile first saw this celestial wanderer on July 1, 2025. It is only the third interstellar object ever seen passing through our neighbourhood. Like the mysterious 'Oumuamua in 2017 and the comet 2I/Borisov in 2019, 3I/ATLAS is turning out to be the most exciting visitor so far.
