1.

Lunar occultation of Spica The Moon will pass in front of Spica (Alpha Virginis), creating a lunar occultation visible from Oceania, Chile, Antarctica, Baker Island, Howland Island and Tokelau. Sat, 10 May 2025 at 04:06 EDT (13 days ago) in Virgo

2.

Conjunction of Neptune and Ceres Neptune and Ceres share the same right ascension, at a separation of 8°22'. Sat, 10 May 2025 at 12:09 EDT (13 days ago) in Cetus

3.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Sat, 10 May 2025 at 20:46 EDT (13 days ago) in Virgo

4.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Sun, 11 May 2025 (12 days ago) in Serpens Caput

5.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 12 May 2025 at 12:55 EDT (11 days ago) in Libra

6.

Lunar occultation of Antares The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Argentina, Chile, Uruguay and Antarctica amongst others. Wed, 14 May 2025 at 00:44 EDT (9 days ago) in Scorpius

7.

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. Wed, 14 May 2025 at 14:59 EDT (9 days ago) in Ophiuchus

8.

Uranus at solar conjunction Uranus is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sat, 17 May 2025 at 19:23 EDT (6 days ago) in Taurus

9.

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, 20 May 2025 at 07:59 EDT (3 days ago) in Aquarius

10.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Thu, 22 May 2025 at 11:44 EDT (Yesterday) in Pisces

11.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°49'. Thu, 22 May 2025 at 14:00 EDT (Yesterday) in Pisces

12.

Close approach of the Moon and Venus The Moon and Venus pass close to each other. Fri, 23 May 2025 at 16:38 EDT (2 hours away) in Pisces

13.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°59'. Fri, 23 May 2025 at 19:51 EDT (5 hours away) in Pisces

14.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Sun, 25 May 2025 at 16:15 EDT (2 days away) in Aries

15.

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. Sun, 25 May 2025 at 21:33 EDT (2 days away) in Aries

16.

New Moon The Moon disappears into the Sun's glare for a few days. Mon, 26 May 2025 at 23:03 EDT (3 days away) in Taurus

17.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 5°12'. Wed, 28 May 2025 at 09:13 EDT (5 days away) in Taurus

18.

Messier 4 is well placed The globular cluster M4 (NGC 6121; mag 5.4) in Scorpius culminates at around midnight local time. Wed, 28 May 2025 (5 days away) in Scorpius

19.

Mercury at superior solar conjunction Mercury passes around the far side of the Sun. Fri, 30 May 2025 at 00:19 EDT (7 days away) in Taurus

20.

Mercury at perihelion Mercury passes its orbit's closest point to the Sun. Sat, 31 May 2025 at 09:26 EDT (8 days away) in Taurus