Interstellar Comet 3I/ATLAS To Make Its Closest Approach to Earth on December 19: Is It Dangerous? Will It Be Visible to the Naked Eye?
On December 19, 2025, interstellar comet 3I/ATLAS reaches its closest point to Earth, passing at a safe distance of 168 million miles. NASA confirms the visitor poses no threat, as it stays nearly twice the distance of the Sun. Astronomers discovered the object on July 1, 2025, using the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS) in Chile.