Interstellar comet 3I/ATLAS makes its closest approach to Earth on Dec. 19: Here's what you need to know

15-12-2025 19:00 via space.com

Interstellar comet 3I/ATLAS makes its closest approach to Earth on Dec. 19: Here's what you need to know

The interstellar comet will pass safely by Earth, giving astronomers their best chance to study it up close.

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17 Dec 2025 (19 hours away): The Moon at apogee

17 Dec 2025 (20 hours away): The Moon at apogee

17 Dec 2025 (21 hours away): The Moon at apogee

17 Dec 2025 (23 hours away): The Moon at apogee

21 Dec 2025 (5 days away): December solstice

20 Dec 2025 (4 days away): The Moon at perihelion

20 Dec 2025 (4 days away): New Moon

20 Dec 2025 (4 days away): December Leonis Minorid meteor shower 2025

18 Dec 2025 (2 days away): Conjunction of the Moon and Mercury

17 Dec 2025 (Tomorrow): The Moon at apogee

16 Dec 2025 (Today): Comae Berenicid meteor shower 2025

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Ghosts, sharks and Norse mythology: US Space Force unveils new names for satellites and space weapons

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