What’s Up: December 2025 Skywatching Tips from NASA
The 3I/ATLAS comet appears, the Geminids sparkle, and the Moon and Jupiter get close The 3I/ATLAS comet makes its closest approach to Earth, the Geminid meteor shower sparkles across the sky, and the Moon and Jupiter get close for a conjunction. Skywatching Highlights Dec. 19: 3I/ATLAS closest approach to EarthContinue Reading












