this post was submitted on 24 Aug 2023
143 points (94.4% liked)

No Stupid Questions

35742 readers
648 users here now

No such thing. Ask away!

!nostupidquestions is a community dedicated to being helpful and answering each others' questions on various topics.

The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:

Rules (interactive)


Rule 1- All posts must be legitimate questions. All post titles must include a question.

All posts must be legitimate questions, and all post titles must include a question. Questions that are joke or trolling questions, memes, song lyrics as title, etc. are not allowed here. See Rule 6 for all exceptions.



Rule 2- Your question subject cannot be illegal or NSFW material.

Your question subject cannot be illegal or NSFW material. You will be warned first, banned second.



Rule 3- Do not seek mental, medical and professional help here.

Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.



Rule 4- No self promotion or upvote-farming of any kind.

That's it.



Rule 5- No baiting or sealioning or promoting an agenda.

Questions which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.



Rule 6- Regarding META posts and joke questions.

Provided it is about the community itself, you may post non-question posts using the [META] tag on your post title.

On fridays, you are allowed to post meme and troll questions, on the condition that it's in text format only, and conforms with our other rules. These posts MUST include the [NSQ Friday] tag in their title.

If you post a serious question on friday and are looking only for legitimate answers, then please include the [Serious] tag on your post. Irrelevant replies will then be removed by moderators.



Rule 7- You can't intentionally annoy, mock, or harass other members.

If you intentionally annoy, mock, harass, or discriminate against any individual member, you will be removed.

Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.



Rule 8- All comments should try to stay relevant to their parent content.



Rule 9- Reposts from other platforms are not allowed.

Let everyone have their own content.



Rule 10- Majority of bots aren't allowed to participate here.



Credits

Our breathtaking icon was bestowed upon us by @Cevilia!

The greatest banner of all time: by @TheOneWithTheHair!

founded 1 year ago
MODERATORS
 

Seems possible...

all 44 comments
sorted by: hot top controversial new old
[–] odium@programming.dev 94 points 1 year ago (4 children)

I don't think go pros are rated for the temperatures reached during takeoff and in space. Also the forces of takeoff and air pressure might cause issues too.

The duct tape will be fine tho.

[–] chemical_cutthroat@lemmy.world 31 points 1 year ago (4 children)

We duct tape a Stretch Armstrong to the rockets, and once Sr. Armstrong reaches his limit, he'll snap back and pull the Earth closer to the moon because there is no gravity in space, thus making future launches cheaper and quicker.

[–] BertramDitore@lemmy.world 9 points 1 year ago (1 children)
[–] sanguinepar@lemmy.world 4 points 1 year ago

Or at least folk-science!

[–] bobs_monkey@lemm.ee 3 points 1 year ago

This being from a physics book written by Chuck Norris

[–] morgan_423@lemmy.world 2 points 1 year ago

Sounds like the recipe to gain a Legend of Zelda: Majora's Mask moon to me.

[–] marsokod@lemmy.world 9 points 1 year ago* (last edited 1 year ago)

They are rated for the temperatures, if you use the right duct tape. We flew one here: https://m.dpreview.com/news/7371388799/nanoavionics-captures-first-4k-resolution-satellite-selfie-in-space-with-customized-gopro

There are less guarantees regarding life time due to radiations, but they are surprisingly good on this and the one in the link still work to this day (525km orbit)

[–] AnAngryAlpaca@feddit.de 5 points 1 year ago (1 children)

I also wonder what bandwidth you have available to stream the videofeed back to earth.

Afaik The original Apollo 11 used some low res, low fps tv format that had to be converted on earth, because they didn't have enough bandwidth to stream full tv resolution at the time.

[–] evidences@lemmy.world 4 points 1 year ago

Oh I know this one, the Apollo 11 cameras were 320 scan lines at 10fps with an optional high res setting of like 1280 scan lines at 0.625 fps. Not sure on the second setting but the first one I'm positive about.

[–] Inductor@feddit.de 4 points 1 year ago

Did you know that every Apollo mission carried multiple rolls of ordinary duct tape with them.

It was used occasionally to fix broken things like the Apollo 17 moonbuggy.

[–] DocMcStuffin@lemmy.world 60 points 1 year ago (3 children)

Electronics have to be designed for use in outer space. That includes hardening from radiation. Adding redundancy because there will be glitches and failures due to bit flips. Using components that can operate in a vacuum. There's thermal considerations, both extreme heat and cold. You also need filters in the optics to protect the image sensor.

You can totally put a GoPro in space. It's just not going to last very long before it fails.

[–] WarmSoda@lemm.ee 19 points 1 year ago (3 children)

Bit flips are a fun thing to learn about. I encourage anyone that doesn't know what it is to just look it up on you tube or whatever.

[–] atocci@kbin.social 16 points 1 year ago (1 children)

And after that I encourage those same people to look up the history of Mario 64 speed running.

[–] WarmSoda@lemm.ee 7 points 1 year ago* (last edited 1 year ago)

That's good to learn to. All you gotta do is half press A.

Edit. I actually forgot about bit flips in mario64. Good call.

[–] saplyng@kbin.social 10 points 1 year ago* (last edited 1 year ago) (1 children)

Bit flips occur when a posse of electrons loses an intimidation check to the sun.

I find this hilarious.

[–] AlecSadler@lemmy.ml 3 points 1 year ago (2 children)

Is that the same as skin cancer?

[–] saplyng@kbin.social 4 points 1 year ago* (last edited 1 year ago)

Skin cancer is when the sun convinces a cell to go with their totallynotapyramidscheme MLM; the cell, in turn, convinces other cells to join their pyram- I mean MLM.

Regression is when the MLM slips up and the cell police finally have enough evidence to take it down for the pyramid scheme that it is.

[–] Peruvian_Skies@kbin.social 1 points 1 year ago

Pretty much.

[–] dandroid@dandroid.app 6 points 1 year ago* (last edited 1 year ago) (2 children)

thermal considerations, both extreme heat and cold.

Can electronics dissipate a significant amount of heat in a vacuum? Obviously they will lose a small amount of heat to radiation, but here on Earth, our electronics dissipate the majority of the heat by making contact with air. This is by either using a fan to force air through the metal fins of a heat sink, or by passively letting the air touching the device carry heat away.

So how do electronics in space dissipate heat? A heat sink can only hold so much heat before it too is too hot for the electronic device to continue to function.

[–] HeyHo@feddit.de 5 points 1 year ago (2 children)

Transferring heat to a part outside the system that is optimised to emit thermal radiation

[–] dandroid@dandroid.app 1 points 1 year ago

Oh, nice. I guess I need to read up on that part.

[–] AnAngryAlpaca@feddit.de 0 points 1 year ago (1 children)

But emit it to what? Vacuum cannot absorb heat.

[–] Fondots@lemmy.world 4 points 1 year ago (1 children)

There are 3 kinds of thermal transfer- conduction, convection, and radiation.

Conduction and convection are largely useless in space, all the heat basically stays in the same system, at most you can move it around do different parts of the same satellite/spacecraft, whatever, but you can't really get rid of it.

Which leaves you with radiation, which is not a particularly efficient way of getting rid of heat but you gotta work with what you got.

I cant give too detailed of an explanation because frankly it's a bit over my head, but this is where the stuff about infrared light being heat comes in. That's not technically true, after all, heat is basically vibrating atoms, and infrared light is photons, same as visible light just at a different frequency. Basically that vibration heat energy gets turned into photons and then just shoots off into space, essentially making all matter glow a bit in the infrared spectrum, and hotter things glow more.

And if/when those photons hit something else, it gets turned back into heat vibrations. Space is vast and mostly empty of course, so those photons could just keep flying through the void for eternity (I'm sure physicists could chime in and say no they don't and they actually lose energy and become some other kind of particle or something else crazy that's way above my head, but don't worry about that unless you're trying to be a physicist with a few years of college under your belt)

Lights work in space, so thermal radiation works in space. This is also the same way heat from the sun reaches us here on earth, there's obviously not a whole lot of matter between us and the sun for conduction or convection to carry the heat to us, it's just glowing and a bunch of those photons eventually hit us and make our atoms get all wiggly.

If you look at pictures of the ISS, in addition to solar panels, they also have big panels that serve as radiators to get rid of excess heat. They have coolant pumping through them to move heat from the rest of the station to the panels, but from the panel they're getting rid of it by just radiating it out into space. They're basically just sitting there glowing out all of the extra heat.

[–] Zippy@lemmy.world 1 points 1 year ago

It a good thing there is no atmosphere between us and the sun. Apparently the noise would be deafening.

[–] Inductor@feddit.de 2 points 1 year ago

They have radiators to dissipate heat. And all the required systems to make that work like coolant pumps, as well as heat sinks (or the coolant fluid is the heat sink).

But they also have heaters, to make sure that (especially the batteries) don't freeze. Satellites hang in a delicate balance between freezing and overheating.

[–] Hamartiogonic@sopuli.xyz 2 points 1 year ago

Also the CPU wouldn’t work reliably in those conditions. The kinds of CPUs we do send to space have been tested rigorously and they are also many generations behind the ones we use here on earth. If you made a space worthy GoPro, it might not be very small, light or cheap. Also, 1080p at 60 fps might be a bit too much for that grandpa chip.

Space is super hard for humans, but we’re not alone in that, because it’s also surprisingly hard for electrics to survive up there.

[–] Decoy321@lemmy.world 45 points 1 year ago (2 children)

Did... Did you think the moon lander doesn't already have cameras?

[–] Kolanaki@yiffit.net 32 points 1 year ago* (last edited 1 year ago) (1 children)

Those cameras are too good. I wanna see the moon as if it was filmed by a tiktok user using their phone.

[–] XTornado@lemmy.ml 3 points 1 year ago* (last edited 1 year ago)

With filters please.... Shrek dancing or some weird shit...

[–] RGB3x3@lemmy.world 6 points 1 year ago

This space launch sponsored by... GoPro and Redbull

[–] kinttach@lemm.ee 39 points 1 year ago

NASA does this. Looking at the metadata from last year’s moon orbiter photos (like this one), it was shot on a GoPro HERO4 Black. Here NASA scientists talk about the cameras on that mission.

[–] BlinkAndItsGone@lemm.ee 11 points 1 year ago (1 children)

Not sure about India, but NASA has used GoPros on Moon-related stuff. Artemis I had 4 GoPros on the ends of its solar panels when it orbited the Moon last year.

[–] BeigeAgenda@lemmy.ca 6 points 1 year ago (1 children)
  • heavily modified GoPros, for them to pass the space rating.
[–] Zippy@lemmy.world 2 points 1 year ago* (last edited 1 year ago) (1 children)

Why would they use GoPro to begin? Certainly using off the shelf items makes sense but doesn't a go pro require you to retrieve the camera to view the video? How do you turn it on or off and wouldn't the battery just run out?

Edit. Found the source. Rather interesting. https://m.dpreview.com/news/7371388799/nanoavionics-captures-first-4k-resolution-satellite-selfie-in-space-with-customized-gopro

[–] BeigeAgenda@lemmy.ca 2 points 1 year ago

I am also stumped, I think the main reason must be PR, because NASA engineers wrote the book about how to get CCD's to work in space.

My guess is that they said "Hey lets get some PR by making GoPro space rated" while the "real" engineers build the proper spacecraft, and that's why the cameras are placed on the solar panels as far away from the crew as possible.

[–] TonyTonyChopper@mander.xyz 11 points 1 year ago (1 children)

they aren't built for space. There's zero pressure so the battery might burst. Also electronics need radiation shielding since there's no atmosphere to protect them.

[–] cooopsspace@infosec.pub 5 points 1 year ago

Because NASAs shit will work on the moon and look okay while doing it?

[–] Mugmoor@lemmy.dbzer0.com 2 points 1 year ago

This is a great question, with great answers. Who needs AskScience?!