1.

The Perseus Double Cluster is well placed The Perseus Double Cluster (NGC 869 and NGC 884; combined mag 4.3) culminates at around midnight local time. Sun, 26 Oct 2025 (13 days ago) in Perseus

2.

Comet C/2025 A6 (Lemmon) reaches peak brightness Comet C/2025 A6 (Lemmon) is forecast to reach the brightest point in its 2025 apparition. Mon, 27 Oct 2025 (12 days ago)

3.

Comet 3I/ATLAS passes perihelion Comet 3I/ATLAS makes its closest approach to the Sun. Wed, 29 Oct 2025 (10 days ago) in Virgo

4.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Wed, 29 Oct 2025 at 09:21 PST (10 days ago) in Capricornus

5.

Mercury at greatest elongation east Mercury is bright and well placed in the evening sky. Wed, 29 Oct 2025 at 13:28 PST (10 days ago) in Scorpius

6.

Mercury at highest altitude in evening sky Mercury is bright and well placed in the evening sky. Fri, 31 Oct 2025 (8 days ago) in Scorpius

7.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Sun, 02 Nov 2025 at 01:01 PST (6 days ago) in Aquarius

8.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°39'. Sun, 02 Nov 2025 at 02:56 PST (6 days ago) in Aquarius

9.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Mon, 03 Nov 2025 at 03:21 PST (5 days ago) in Pisces

10.

Mercury at dichotomy Mercury reaches half phase in the evening sky. Mon, 03 Nov 2025 at 19:16 PST (5 days ago) in Scorpius

11.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 05 Nov 2025 at 05:19 PST (3 days ago) in Aries

12.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Wed, 05 Nov 2025 at 14:27 PST (3 days ago) in Aries

13.

Close approach of the Moon and M45 The Moon and M45 pass close to each other. Thu, 06 Nov 2025 at 07:51 PST (2 days ago) in Taurus

14.

Lunar occultation of Beta Tauri The Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from Africa and South America. Fri, 07 Nov 2025 at 19:39 PST (19 hours ago) in Taurus

15.

Comet C/2025 A6 (Lemmon) passes perihelion Comet C/2025 A6 (Lemmon) makes its closest approach to the Sun. Sat, 08 Nov 2025 (Today) in Ophiuchus

16.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 3°56'. Sun, 09 Nov 2025 at 23:55 PST (Tomorrow) in Gemini

17.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Mon, 10 Nov 2025 at 01:31 PST (2 days away) in Gemini

18.

Jupiter enters retrograde motion Jupiter reverses its direction of motion across the sky. Tue, 11 Nov 2025 at 08:37 PST (3 days away) in Gemini

19.

Asteroid 471 Papagena at opposition Asteroid 471 Papagena makes closest approach to the Earth. Tue, 11 Nov 2025 at 15:58 PST (3 days away) in Cetus

20.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Tue, 11 Nov 2025 at 21:28 PST (3 days away) in Leo