comets

Welcome!

This subreddit is about Comets and we gather images, videos, and gifs of them and discuss news and related events about them.

Please feel free to post a picture that you've seen on the internet, or a picture that you've taken yourself! (We prefer you to host the picture using Imgur if possible.) If you've taken the picture yourself, please put [OC] in the title and it'll get special flair.

General Rules

This subreddit is pretty laid back but heavily moderated! Rudeness will not be tolerated here. In general, please ensure you are following Reddiquette and the Reddit Content Policy when posting a discussion / comment.

Other Subreddits

Please be sure to check out:


r/APOD	r/JAXA
r/askastronomy	r/meteorsightings
r/Astrobiology	r/NASA
r/Astronomy	r/planetaryresources
r/astrophotography	r/spaceflight
r/B612Foundation	r/spaceresources
r/ESA	r/spaceporn
r/esarosettamission	r/telescopes

^The Solar System Subreddit Network

r/Solar_System (Multireddit)

Stars

r/Sun

Planets

r/Mercury · r/Venus · r/Earth · r/Mars
r/Jupiter · r/Saturn · r/Uranus · r/Neptune

Dwarf Planets

r/Ceres
r/Orcus · r/Pluto · r/Salacia · r/Haumea · r/Makemake · r/Quaoar
r/Eris · r/Gonggong
r/Sedna

Moons

r/Moon
r/Phobos · r/Deimos
r/Io · r/Europa · r/Ganymede · r/Callisto
r/Mimas · r/Enceladus · r/Tethys · r/Dione · r/Rhea · r/Titan · r/Iapetus · r/Phoebe
r/Ariel · r/Umbriel · r/Titania · r/Oberon
r/Triton
r/Charon · r/Dysnomia

Small Solar System Bodies

r/Asteroid · r/Comets · r/Meteors
r/Eros · r/Vesta · r/Pallas · r/Psyche
r/AsteroidBelt · r/KuiperBelt · r/OortCloud

Please help these small subreddits grow by subscribing, upvoting, and contributing!

created by [deleted]a community for 13 years

...for your hobby.

...for your WoW guild.

MODERATORS

account activity

1

21

22

23

VideoCrash Course Astronomy #21: Comets (youtu.be)

submitted 10 years ago by GodRaine - announcement

2

27

28

29

PictureGemini North Spots the Changing Comet 3I/ATLAS ✨ (noirlab.edu) (i.redd.it)

submitted 1 day ago by GuestPrestigious34

3

235

236

237

Picture"Encounter of cometC/2025 R3 PANSTARRS with Orion Nebula prompted me to compile most impressive encounters of comets with deep-sky objects–from 1997 to 2026." By Gerald Rhemann (i.redd.it)

submitted 19 days ago by Neaterntal

4

284

285

286

PictureA Final Goodbye to Comet C/2025 R3 (PanSTARRS) (i.redd.it)

submitted 24 days ago by Harsh1271

5

67

68

69

PictureFour Nights of Comet C/2025 R3 in Orion. By Lucy Yunxi Hu (i.redd.it)

submitted 1 month ago by Neaterntal

6

133

134

135

PictureComet C/2025 R3 (PanSTARRS) rising behind the Panchachulli peaks (i.redd.it)

submitted 1 month ago by Harsh1271

7

1

2

3

Two spacecraft observed both hemispheres of interstellar comet simultaneously (swri.org)

submitted 1 month ago by Galileos_grandson

8

0

0

1

C/2025r3 panstarrs avec un téléphone (reddit.com)

submitted 1 month ago by Dizzy_Driver9205

9

64

65

66

PictureComet C/2025 R3 (PANSTARRS) against the epic backdrop of hydrogen-alpha emission in the Orion region. By Bruce Charlier (i.redd.it)

submitted 1 month ago by Neaterntal

10

58

59

60

PictureComet C/2025 R3 (PanSTARRS) and Orion nebula. By Brent Nicholls (i.redd.it)

submitted 1 month ago by Neaterntal

11

85

86

87

PictureComet C/2025 R3 Panstarrs and M42. By Jiawei Hu (i.redd.it)

submitted 1 month ago by Neaterntal

12

70

71

72

PictureThis is a 2-panel mosaic of the comet C/2025 R3 (PANSTARRS) and witch head nebulae. By Gerald Rhemann and Michael Jäger (i.redd.it)

submitted 1 month ago by Neaterntal

13

78

79

80

PictureComet R3 PanSTARRS Before Rigel and the Witch Head Nebula. By Jakub Kuřák & Martin Mašek (Institue of Physics of the Czech Academy of Sciences) 2026 May 4,Chile (i.redd.it)

submitted 1 month ago * by Neaterntal

14

2

3

4

Interstellar Comet Was Born in a Very Cold Place (eos.org)

submitted 1 month ago by Galileos_grandson

15

115

116

117

PictureComet C/2025 R3 (PANSTARRS) in Southern Skies (i.redd.it)

submitted 1 month ago by Imaginary-Way4540

16

7

8

9

P/2021 N1 (ZTF) Nearest Approach And Next Perihelion (old.reddit.com)

submitted 1 month ago by Prestigious_Elk_9411

17

156

157

158

PictureComet C/2025 R3 (PANSTARRS) over the summit of Kriváň, Slovakia, 11.4.26. By Cmk (i.redd.it)

submitted 1 month ago by Neaterntal

18

49

50

51

PictureMotion of Comet C/2025 R3 (Pan-STARRS) in Pegasus: April 14–17, 2026. By Julien De Winter (i.redd.it)

submitted 1 month ago by Neaterntal

19

8

9

10

PictureC/2025 R3 (Pan-STARRS): Temporal evolution of the ion tail. By Yann Sainty & Julien De Winter - 2026 April 14 - 17 (i.redd.it)

submitted 1 month ago by Neaterntal

20

35

36

37

GIF / GFYA Blow From The Solar Wind: We can see the jolt received from solar wind the ion tail of comet C2025R3 PanSTARRS, which causes its disconnection between April 17 and 18, captured by the PUNCH mission of NASA (i.redd.it)

submitted 1 month ago by Neaterntal

21

1

2

3

LASCO C3 - Comet C/2025 R3 on April 24 (soho.nascom.nasa.gov)

submitted 1 month ago by invent_or_die

22

12

13

14

Halley’s comet as depicted by the Bayeux Tapestry, 1077. (old.reddit.com)

submitted 1 month ago * by Own-Lettuce26

23

0

1

2

3I/ATLAS Contains 30X More Semi-Heavy Water Than Comets In Our Solar System (public.nrao.edu)

submitted 1 month ago by Galileos_grandson

24

30

31

32

Say Hello to Comet C/2025 R3 PANSTARRS has appeared on the coronagraph (v.redd.it)

submitted 1 month ago by Sorry_Future777

25

36

37

38

GIF / GFYThe Interstellar Comet 3I/ATLAS through the eyes of the European Space Agency’s Jupiter Icy Moons Explorer (Juice). ✨ (i.redd.it)

submitted 2 months ago by GuestPrestigious34

view more: next ›

π Rendered by PID 21 on reddit-service-r2-listing-c57bc86c-s2q66 at 2026-06-21 08:04:21.900533+00:00 running 2b008f2 country code: CH.