/r/space
Share & discuss informative content on:
- Astrophysics
- Cosmology
- Space Exploration
- Planetary Science
- Astrobiology
ABOUT r/space
Share & discuss informative content on:
- Astrophysics
- Cosmology
- Space Exploration
- Planetary Science
- Astrobiology
UPCOMING LAUNCHES
Timezone is UTC
| Date | Event |
|---|
- View Full Calendar
- To suggest events, message the moderators
SUBMITTING LINKS
Please use original sources for content wherever possible. Please limit yourself to no more than 5 submissions per 24 hours.
Encouraged
- Informative high-quality articles, news & videos
- Peer-reviewed research papers that are publicly available
- Academic texts that are publicly available
Not Allowed
- Sensationalized/misleading titles or Unscientific content
- Blogspam, links behind a paywall, or pirated content
Social media links (Facebook, Twitter, Instagram, etc.)
Exception: Twitter links are allowed only for breaking news by official sources. Examples:
1. Pluto flyby announcements by NASA
2. SpaceX launch coverage by SpaceX
Duplicate/re-hosted content (use Reddit Search)
Petitions/surveys/crowd-funding
Shortened links/mobile links
SUBMITTING IMAGES & GIFs
Only allowed on Sundays UTC. Short videos without meaningful audio content qualify as GIFs.
Encouraged
Directly linked quality images/GIFs with an appropriate and concise title
Include information about the subject, equipment, processing, and name of the photographer
If you are the photographer do not include additional demographic information, the image should stand on its own merit
Recommended subreddits: r/spaceporn, r/astrophotography & r/astronomy for images and r/spacegifs for GIFs.
Not Allowed
- Memes/low quality images
- Reaction GIFs
- Re-hosted content (use KarmaDecay)
- Misleadingly edited images
SUBMITTING A TEXT POST
Straightforward questions (who/what/where) belong to the Weekly Space Questions thread (pinned at the top)
Encouraged
- Informative & thought-provoking posts
- Open-ended questions that promote discussion
- Highly recommended subreddit: r/askscience
Not Allowed
- ELI5/PSA styled posts
- Posts that only state your opinion and don't engage the community
COMMENTS
Encouraged
- On topic comments that convey meaningful information
- Backup scientific claims with appropriate links
Not Allowed
- Low-effort/short comments
- Off-topic comments
- Unscientific comments (e.g. Flat Earth)
- Image-only comments
- Memes/jokes/circle-jerk/trolling/insults
Please report comments & links that don't follow the rules
Moderation will be strictly enforced on those not following the rules
Discord
We have a discord server at https://discord.gg/KpjrzqWcmE, feel free to join.
MESSAGE THE MODERATORS
/r/space
27,048,789 Subscribers
4K Earth Timelapse
16:34 UTC
Could GLP-1 agonists be used to curb food cravings and ration food during long duration interplanetary space missions?
14:51 UTC
What if a waffle inspired a futuristic city on Mars?
14:37 UTC
Understood that the earth is in orbit traveling around galaxy. However, what is out there in our path? Do we know what the conditions are like in the direction that we are travelling? If so, are there any significant differences coming our way in a few centuries, millennium, or million or so years
13:03 UTC
Question about observable universe and cosmic microwave background
Was just watching a Brian Cox interview and had this question
Astronomers talk about the "observable universe" and imply there is stuff so far out there that light from those objects hasn't had enough time to reach us yet. When some of the first images from JWST were published there was some focus on highly red shifted galaxy that now holds the record for being the furthest away from our perspective, something like 14 billion light years away. This implies there's a 14 billion-ish lighter bubble around earth of which we can observe(?)
My question is, assuming the CMB is at the outer most edge of the universe how can we see it if it's outside our observable bubble?
11:19 UTC
How to forecast northern lights
Looking to travel to Fairbanks next year. Watching moon cycles but struggling to find KP predictions for 45-60 days out.
Adding 27 days to recent spikes is the only method we can think of to forecast. Is that even valid or is there a better way?
03:32 UTC
Mars and Titan
23:29 UTC
And we still have to believe we are alone?
Maybe we are too aggressive or uninteresting or something. So many stars and we are alone?
22:06 UTC
NGC 2359 - "Thor's Helmet"
- Celestron C8 on AVX mount
- 41x 300s L-ultimate
- 22x 60s iruv cut
- Flats, Darks, Darkflats
- Split channel, align, and pixelmath recombination
- blurX, NoiseX, StarX
- Spcc for stars
- Statistical stretch on narrowband
- Dark structure enhancement
- Pixelmath to screen stars back in
- Bortle 4 at 41° N latitude
22:05 UTC
Drove out to the Valley of Fire to take some pictures last night
21:21 UTC
The first two of the ten SRB segments of SLS for Artemis 2 on mobile launcher 1 inside the VAB
Image credit: NASA/Glenn Benson
19:51 UTC
Orion molecular cloud complex
19:43 UTC
The moon passed between Nasa's Deep Space Climate Observatory and the Earth allowing this rare pic showing the dark side of the moon
19:21 UTC
IC 1805 - The Heart Nebula captured with my Nikon D5300
I'm impressed with the amount of detail the L-extreme filter is able to pull out of this nebula. I've shot this target before but haven't been able to produce as clean an image until now. A real game changer!
Equipment:
Camera: Nikon D5300 (Full Spectrum)
Telescope: William Optics ZenithStar 61 II
APO with Field flattener
Filter: Optolong L-extreme
Guide Camera: ZWO 120mm mini
Mount: Skywatcher Star Adventurer GTi
Acquistion:
Shot in Bortle 5
-Lights: 50x300
-Flats: 100
-Bias: 100
Processing:
-Stacked and stretched in Siril
-Additional stretching in Photoshop
18:33 UTC
A Bright meteor by Jupiter. Geminids 2023
17:22 UTC
All Space Questions thread for week of December 01, 2024
Please sort comments by 'new' to find questions that would otherwise be buried.
In this thread you can ask any space related question that you may have.
Two examples of potential questions could be; "How do rockets work?", or "How do the phases of the Moon work?"
If you see a space related question posted in another subreddit or in this subreddit, then please politely link them to this thread.
Ask away!
17:00 UTC