Interstellar comet 3I/ATLAS is spraying water across the solar system

NASA's Swift Observatory detected water vapor from interstellar comet 3I/ATLAS, marking the first time scientists have identified water from a comet originating outside our solar system. The comet was releasing water at nearly three times Earth's distance from the Sun at a rate of 40 kilograms per second, much more active than typical solar system comets at that range. This discovery allows astronomers to compare interstellar comets with familiar ones and provides insights into how planetary systems form around other stars.