Comet 3I/ATLAS Today (Dec. 20, 2025): Europa Clipper’s UV Surprise, Parker Solar Probe Images, and the Latest Forecast
December 20, 2025 — The rare interstellar visitor known as Comet 3I/ATLAS is now past its closest approach to Earth and heading back out toward the outer solar system. But “past” doesn’t mean “gone.” Today’s updates include a new research