Let's suppose we could dump enough "breathable" air (whatever that means for humans) into the solar system that it filled the spaces between planets.

What would happen?

A - I imagine it would then become possible to fly airplanes between planets, perhaps balloons? Would space travel become easier or harder?

B - According to another lemmy post, we would start to hear sound waves from the sun (A constant jackhammer sound - delightful)

C - Each each planet become the center of some mega cyclone (like the Jupiter storms, but bigger)?

D - At some point the air above us wouldn't be pushing down onto the earth at sea level, could we survive the additional pressure?

This is probably more of a Lemmy specific thing than what's normal on this community, but I posted on a community from lemmy.ml and the mods there banned me from the community.

They didn't remove my post or message me about it. I only found out because when I was going through replies, I couldn't reply and I noted that my account is banned from that community.

I wasn't saying anything untoward or encouraging anyone to do anything illegal or anything like that. It was a comment about systems of government. I don't believe I put any emphasis on whether one was better than another, but the post was in a non-political community; so it should not lean one way or the other on the matter, and the post I was replying to introduced the political discussion, so I was on-topic.

The specifics aren't super important. What I want to know is whether there's a built-in system to inquire with the mods or something to try to get an official reply as to what rules they believe I had broken to deserve a ban, and whether that ban is permanent or not. I tried simply messaging one of the mods, but it's been hours with no reply.

Is there any way to find the information? Previously on Reddit, I would almost always get a message from the subreddit about what happened, what violation caused it, and allowed me to message the mods to try to argue my case, though, me getting banned on that platform was quite rare. This is my first time knowingly being removed like this and I don't understand the process here.

Can anyone enlighten me about how these things are supposed to work on Lemmy?

If freezing salt water produces freshwater ice, why is desalinization such a difficult problem?

https://www.youtube.com/watch?v=c2wafIzuvlI

I was watching the above minute physics video, and they indicated in a brief one sentence line that saltwater freezes into freshwater ice. That got me thinking.

Under what circumstances could you actually freeze salt into ice? To make salt ice?

Hello,

I have never lived in a snowy place. Where I am now we usually get enough ice to make it slick and it shuts the region down. We live in the center of the country so depending where exactly we end up we probably won't have an entire mountain to drive over...probably.

I am moving to be either in Denver area or Minneapolis area. What do I do with our cars?

I have a small 4WD SUV (I don't know how to drive in areas that actually require 4WD). Our other car is a slightly larger SUV. Both have pretty low clearance.

We currently have all season tires. Do we need to get special tires or chains? How do I learn to drive with the chains? Also, does everyone just have 2 sets of tires laying around?

What about vehicle fluids? IIRC viscosity is different in different climates, is that just oil I'd need to worry about?

And are you supposed to heat your car or whatever? I know they do that in super cold places but not sure about Minneapolis.

The areas we are looking at are in and around the major cities, although if we end up in Minnesota there's a chance we will be in a more rural area or in a place where we need to drive a long distance because housing is expensive.

If anyone knows how much longer we have to get there before the roads become treacherous this winter that would be helpful. I think we have til end of September to be safe, is that usually true?

Any other tips are much welcomed and appreciated. I don't really have anyone I can ask and the internet is pretty full of AI BS now.

The astronauts on the ISS that are stuck and can't parachute back to Earth... but why not?

The highest jump I could find was 39km (Stratos jump)

Is it the height from the planet? The speed of the ISS? If we wanted to design ISS escape pods, what would be required?

I keep interacting with systems-- like my bank, etc.-- that require (or allow) you to add one or more trusted devices, which facilitate authentication in a variety of ways.

Some services let you set any device as a trusted device-- Macbook, desktop, phone, tablet, whatever. But many-- again, like my bank-- only allow you to trust a mobile device. Login confirmation is on a mobile device. Transaction confirmation: mobile device. Change a setting: Believe it or not, confirm on mobile device.

That kind of makes sense in that confirming on a second device is more secure... That's one way to implement MFA. But of course, the inverse is not true: If I'm using the mobile app, there's no need to confirm my transactions on desktop or any other second device, and in fact, I'm not allowed to.

But... Personally, I trust my mobile device much less than my desktop. I feel like I'm more likely to lose it or have it compromised in some way, and I feel like I have less visibility and control into what's running on it and how it's secured. I still think it's fairly trustworthy, but just not categorically better than my Macbook.

So maybe I'm missing something: Is there some reason that an Android/iOS device would be inherently more secure than a laptop? Is it laziness on the part of (e.g.) my bank? Or is something else driving this phenomenon?