3I/ATLAS has become a great fascination for astronomers, scientists, and the public. This is because it is only the third confirmed interstellar object to ever come across our solar system. It follows in the footsteps of other interstellar visitors - the 1I/'Oumuamua and the visibly active 2I/Borisov. These comets give a rare glimpse into the composition of a distant stellar system.
In a landmark event for the scientific community and common stargazers alike, the interstellar comet 3I/ATLAS is set to make its historic closest approach to Earth this Friday, 19 December 2025. This celestial encounter is a once-in-a-lifetime opportunity for observers because, based on its hyperbolic trajectory, it is on a terminal path through our solar system which means, the upcoming flyby will be its final appearance before it moves into the deep reaches of the cosmos, never to return.
