Ask Lemmy

33124 readers

1972 users here now

A Fediverse community for open-ended, thought provoking questions

Rules: (interactive)

1) Be nice and; have fun

Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them

2) All posts must end with a '?'

This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?

3) No spam

Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.

4) NSFW is okay, within reason

Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com. NSFW comments should be restricted to posts tagged [NSFW].

5) This is not a support community.

It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.

6) No US Politics.

Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !askusa@discuss.online

Reminder: The terms of service apply here too.

Partnered Communities:

Logo design credit goes to: tubbadu

founded 2 years ago

MODERATORS

Bluetreefrog@lemmy.world

TheSaneWriter@lemm.ee

TheSaneWriter@lemmy.thesanewriter.com

Asudox@lemmy.world

lemmy_bot@lemmy.world

beefbaby182@lemmy.world

ModeratorCan@lemmy.world

neidu3@sh.itjust.works

asudox@lemmy.asudox.dev

candyman337@lemmy.world

candyman337@sh.itjust.works

Could Venusian greenhouse gas effects keep a TNO like Pluto warm? (lemmy.world)

submitted 1 day ago* (last edited 1 day ago) by abbotsbury@lemmy.world to c/asklemmy@lemmy.world

16 comments fedilink hide all child comments

TNO = trans neptunian object, basically far out dwarf planet

Obviously there would be less sun to greenhouse, but theoretically could that be a way to have closer-to-earth habitats far away from a star?

edit: the TNO does not have to be like Pluto, it can be bigger or have different conditions

you are viewing a single comment's thread
view the rest of the comments

[–] tal@lemmy.today 2 points 1 day ago* (last edited 1 day ago)

Well, if you want an atmosphere to start with, might try running numbers for sulfur hexafluoride. I don't know if it'd be your best option, but I'd guess that it'd be up there if you can keep the object warm enough for it to be a gas.

https://www.epa.gov/eps-partnership/sulfur-hexafluoride-sf6-basics

Sulfur hexafluoride (SF₆) is a synthetic fluorinated compound with an extremely stable molecular structure. Because of its unique dielectric properties, electric utilities rely heavily on SF₆ in electric power systems for voltage electrical insulation, current interruption, and arc quenching in the transmission and distribution of electricity. Yet it is also the most potent greenhouse gas known to date. Over a 100-year period, SF₆ is 23,500 times more effective at trapping infrared radiation than an equivalent amount of carbon dioxide (CO₂).

I don't know how to calculate albedo, but I'm sure that there are Web pages out there talking about it.

EDIT: If all you care about is keeping the body warm via solar radiation and you don't care about it specifically using purely the greenhouse effect, you could use space mirrors in orbit.