1.

Asteroid 11 Parthenope at opposition Asteroid 11 Parthenope makes closest approach to the Earth. Tue, 14 May 2019 at 03:10 EDT (1,802 days ago) in Libra

2.

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. Mon, 13 May 2019 at 17:52 EDT (1,803 days ago) in Leo

3.

Supernova SN2019fck discovered A new supernova has been discovered in NGC 5243. Sun, 12 May 2019 (1,803 days ago)

4.

Messier 5 is well placed The globular cluster M5 (NGC 5904; mag 5.7) in Serpens culminates at around midnight local time. Sun, 12 May 2019 (1,804 days ago) in Serpens Caput

5.

Comet C/2018 W1 (Catalina) passes perihelion Comet C/2018 W1 (Catalina) makes its closest approach to the Sun. Sun, 12 May 2019 (1,804 days ago) in Eridanus

6.

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. Sat, 11 May 2019 at 21:12 EDT (1,805 days ago) in Leo

7.

Close approach of the Moon and M44 The Moon and M44 pass close to each other. Fri, 10 May 2019 at 22:14 EDT (1,806 days ago) in Cancer

8.

η-Lyrid meteor shower 2019 The η-Lyrid meteor shower reaches its peak. Wed, 08 May 2019 (1,807 days ago) in Lyra

9.

Conjunction of Mercury and Uranus Mercury and Uranus share the same right ascension, at a separation of 1°22'. Wed, 08 May 2019 at 04:12 EDT (1,808 days ago) in Aries

10.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Tue, 07 May 2019 at 20:20 EDT (1,809 days ago) in Taurus

11.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°14'. Tue, 07 May 2019 at 19:34 EDT (1,809 days ago) in Taurus

12.

η-Aquariid meteor shower 2019 The η-Aquariid meteor shower reaches its peak. Mon, 06 May 2019 (1,810 days ago) in Aquarius

13.

New Moon The Moon disappears into the Sun's glare for a few days. Sat, 04 May 2019 at 18:46 EDT (1,812 days ago) in Aries

14.

Conjunction of the Moon and Mercury The Moon and Mercury share the same right ascension, at a separation of 2°54'. Fri, 03 May 2019 at 02:25 EDT (1,813 days ago) in Pisces

15.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 3°37'. Thu, 02 May 2019 at 07:39 EDT (1,814 days ago) in Pisces

16.

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. Thu, 02 May 2019 at 02:08 EDT (1,814 days ago) in Cetus

17.

Supernova SN2019ein discovered A new supernova has been discovered in NGC 5353. Tue, 30 Apr 2019 (1,815 days ago)

18.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Mon, 29 Apr 2019 at 21:16 EDT (1,817 days ago) in Sagittarius

19.

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. Sun, 28 Apr 2019 at 14:19 EDT (1,818 days ago) in Aquarius

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. Fri, 26 Apr 2019 at 18:18 EDT (1,820 days ago) in Capricornus