this post was submitted on 29 Aug 2026
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New Communities

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A place to post new communities all over Lemmy for discovery and promotion.

Rules

The rules for behavior are a straight carry over of Mastodon.World's rules. You can click the link but we've reposted them here in brief, as a guideline. We will continue to use the Mastodon.World rules as the master list. Over all, be nice to each other and remember this isn't a community built around debate. For the rules about formatting your posts, scroll down to number 2.

1. Follow the rules of Mastodon.world, which can be found here.

A. Provide an inclusive and supportive environment. This means if it isn't rulebreaking and we can't be supportive to them then we probably shouldn't engage.

B. No illegal content.

C. Use content warnings where appropriate. This means mark your submissions NSFW if need be.

D. No uncivil behavior. This includes, but is not limited to: Name Calling; Bullying; Trolling; Disruptive Commenting; or Personal Criticisms.

E. No Harrassment. As an example in relation to Transgender people this includes, deadnaming, misgendering, and promotion of conversion therapy. Similarly Misogyny, Misandry, and Racism are also banned here.

2. Include a community or instance title and description in your post title. - A following example of this would be New Communities - A place to post new communities or instances all over Lemmy for discovery and promotion.

3. Follow the formatting. - The formatting as included below is important for people getting universal links across Lemmy as easily as possible.

Formatting

Please include this following format in your post:

[link text](/c/community@instance.com)

This provides a link that should work across instances, but in some cases it won't

You should also include either:

!community@instance.com

or instance.com/c/community

FAQ:

Q: Why do I get a 404?

A: At least one user in an instance needs to search for a community before it gets fetched. Searching for the community will bring it into the instance and it will fetch a few of the most recent posts without comments. If a user is subscribed to a community, then all of the future posts and interactions are now in-sync.

Q: When I try to create a post, the circle just spins forever. Why is that?

A: This is a current known issue with large communities. Sometimes it does get posted, but just continues spinning, but sometimes it doesn't get posted and continues spinning. If it doesn't actually get posted, the best thing to do is try later. However, only some people seem to be having this problem at the moment.

Extra FAQ information

Image Attribution:

Fahmi, CC BY 4.0 https://creativecommons.org/licenses/by/4.0, via Wikimedia Commons>>

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this isn't really a new community but i think promoting it from time to time makes sense because it has barely any subscribers and most people probably don't know about it. so i'm promoting it here to maybe give it some fresh new views! enjoy

Edit: because i'm stupid, here's the link: !mars@discuss.tchncs.de

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[–] ladicius@lemmy.world 4 points 1 week ago (2 children)

Won't happen anyways. Political or financial reasons are being dwarfed by the inevitable death of the crew. Again: Two years in a tin can, touch down on mars with a frail crew, liftoff from mars which needs a lot of fuel, two years in a tin can...

And all that for what? Two humans stepping around on a dead planet? For what? We can't even keep us alive on the planet that is our homestead - what do we do over there? Spend a trillion for some nice pics of the scenery?

Forget it. Totally and completely forget it. Will not happen.

The Earth to Mars flight time is closer to 6 months, something humans have done before on the ISS. The Constellation program planned for astronauts to spend 500 days on Mars to conduct scientific experimentation.

And the fuel for a return trip would be created locally by In Situ Resources Utilisation which is a bit of a NASA wet dream but not completely unrealistic. Considering all you need is H2 and O2 that can be hydrolyzed from water ice on the Mars surface.

But yeah won't happen anytime soon

[–] gandalf_der_13te@feddit.org 0 points 1 week ago (1 children)

Two years in a tin can, touch down on mars with a frail crew, liftoff from mars which needs a lot of fuel, two years in a tin can…

The plan is indeed not to go there, take a nice pic, return home. The plan (at least mine and of many other people) is to go there and stay there permanently, from the first human-carrying ship onwards. Lift support systems, tools, equipment will have to be brought along of course, but keeping people alive on Mars is not more difficult than keeping them alive on the ISS (which is a closed tin can as well btw, and people routinely spend 6 months up there).

The advantage of Mars over the ISS is that settlers on mars have access to raw material resources all around them, including rock (hydrated minerals), which can be used as a source of water, carbon dioxide (and with it a source of carbon, which is the building block for a lot of materials), and metal ores. all of these can be turned into useful materials through a process known as ISRU (In-Situ Resource Utilization, in other words on-site resource usage), which can then be used to reduce imports from Earth and to grow the settlement outwards autonomously. That's the difference to just "living in a tin can".

[–] ladicius@lemmy.world 4 points 1 week ago

ISS gets delivered tons of stuff regularly, stuff that has been produced using the full extent of all supply chains of the whole planet Earth. All dreams of replicating just a tiny part, only the most necessary parts, of these supply chains on Mars are delusional, and that's at the low level necessary to support only two humans (probably women as they're much more resilient, gritty and persistent than male astronauts).

And again: For what? Simply to prove "we can"? The money this hazardous endeavour would cost would better be spent improving living conditions on planet Earth. If you want to replicate life on Mars do one of the "1.000 days in an sealed off enclosure"-experiments here on earth - saves tons of money (literally) and is much less deadly.

I won't interfere with that community as it's a nice game of thoughts and ideas and probably has a lot of entertaining and informative aspects. Have fun 👋