Ancient Oort Cloud Visitor C/2025 R3 PANSTARRS Graces the Night Sky

A newly spotted long-period comet, C/2025 R3 PANSTARRS, likely from the Oort Cloud, has been visible for weeks in the northern hemisphere and is not expected to return for about 170,000 years. Its fleeting appearance offers a rare glimpse of the solar system’s earliest materials, helping scientists study planetesimals and the building blocks that may have seeded Earth, before gravitational forces potentially eject it from the system.