Astronomy
31 Dec 2025 (6 days away): Close approach of the Moon and M45
29 Dec 2025 (4 days away): The Rosette Nebula is well placed
28 Dec 2025 (3 days away): The cluster NGC 2232 is well placed
27 Dec 2025 (2 days away): Moon at First Quarter
27 Dec 2025 (2 days away): Conjunction of the Moon and Saturn
27 Dec 2025 (2 days away): Close approach of the Moon and Saturn
What old, dying stars teach us about axions as a candidate for dark matter
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NASA satellite gazes into Medusa Pool | Space photo of the day for Dec. 24, 2025
The biggest black hole breakthroughs of 2025