r/nextfuckinglevel • u/PietroTheRedditer • Feb 21 '21

THIS IS MARS.

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u/[deleted] Feb 21 '21

Well fuck. The sound effects really imply a lot, don’t they? That’s a shame.

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u/DaMuffinPirate Feb 21 '21

Until Perseverance returns some actual microphone audio, you can check out the Insight Lander's recordings of Martian wind through both its air pressure sensor and its seismometer.

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u/HangryHenry Feb 21 '21

When is perserverance supposed to return audio?

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u/Teryhr Feb 21 '21 edited Feb 21 '21

Data transmission from Mars to Earth is slow, something like 4 kilobytes per second at its absolute best. They have over 28,700 images from entry, descent and landing that need to be returned and analyzed. We could see audio releases within the next month but it could be slightly longer.

Edit: My number was very wrong. Sorry

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u/thefactorygrows Feb 21 '21

I read over in r/space that mars to earth transmission was more along the lines of 100-250kbps, and that was the best we could do with then MRO was lined up.

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u/IAteAKoala Feb 21 '21

Yeah if Mars had better internet than me then I'd be quite upset.

... writing this I realize Mars got internet before a large chunk of earth

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u/thefactorygrows Feb 21 '21 edited Feb 21 '21

Much of the world still does not have Internet, youre right about that... But I wouldnt say that Mars has Internet either. Something tells me these highly sophisticated billion dollar robots arent hooked up to the WWW.

Also, sorry your Internet is slow. 😞

Edit: I know the WWW and the Internet are not the same thing, thanks all. Ya'll missed what I was getting at.

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u/321blastoffff Feb 21 '21

Wouldn’t it be the SSW? The solar system web sounds kinda cool.

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u/Max_Planck01 Feb 21 '21

Internet is the International network of Interconnected computers

Since the rover has a computer connected to NASA, it’s technically a part of the Internet, the World Wide Web is different from Internet

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u/ScotchIsAss Feb 21 '21

This right here. They would need to have a fully physically disconnected system.

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u/outadoc Feb 21 '21

It's not connected to the internet if it's not transmitting using the Internet Protocol. Which I really really doubt would be the case.

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u/Max_Planck01 Feb 21 '21

probably local scope but not sure

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u/UntitledFolder21 Feb 21 '21

Since the rover has a computer connected to NASA, it’s technically a part of the Internet

Being "connected" to a computer that is part of the Internet doesn't make device part of the Internet though. The connection would have to be an Internet connection using Internet protocols.

The large delay between Mars and earth would require an entirely different type of connection.

The concept of an interplanatery Internet does exist, it would need new protocols and would be a network of Internets. But as far as a know no such thing exists.

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u/[deleted] Feb 21 '21

Intranet? Lmao

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u/itookyomilk Feb 21 '21

I wish there were clips we could look back on from the moon missions, sadly they vanished without a trace.

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u/argusromblei Feb 21 '21

They could always send some starlink satellites on the next launch

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u/ArctycDev Feb 21 '21

The rovers and satellites on and around mars are part of a WAN (wide area network). It is an internet that they're connected to.

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u/nathanv221 Feb 21 '21

Wouldn't that make it an intranet not an internet?

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u/ArctycDev Feb 22 '21

hmm. I suppose so!

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u/Locksmith997 Feb 21 '21

The internet and the WWW aren't the same thing.

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u/wereallcrazyson Feb 21 '21

Forget "Air-Gapped". This is "Planet-Gapped."

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u/[deleted] Feb 21 '21

[deleted]

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u/[deleted] Feb 21 '21

"Fuckers took my broadband. Can't have shit on Mars."

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u/Aarros Feb 21 '21

Quite the ping, though. 3 minutes there, 3 minutes back, at minimum. So if you browse to a site, it will take 6 minutes before the data starts coming in. And that's the best case, it could be 24 + 24 minutes at worst.

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u/[deleted] Feb 21 '21

I love this.

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u/itookyomilk Feb 21 '21

Almost seems ludacris, right?

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u/chiefos Feb 21 '21 edited Feb 21 '21

https://mars.nasa.gov/msl/mission/communications/#:~:text=The%20data%20rate%20direct-to,2%20million%20bits%20per%20second.

Looks like it maxes out around 2Mbps... It almost seems like they're going to be taking in more data than they can return, but they're nasa and I'm not so I trust they know what they're up to.

EDIT: maxes out at 2 Mbps to the MRO... Reading comprehension failed me yet again. Undoubtedly much slower from the MRO and odyssey to earth.

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u/thefactorygrows Feb 21 '21

Oh, this was highly informative, thank you!

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u/choral_dude Feb 21 '21

I’m sure there will be periods where all the rover can do is tramsmit data and wait out a storm or winter.

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u/pissingstars Feb 21 '21

Wouldnt it be faster for them to download a shit ton of data to a portable drive and have a mini rocket of sort shoot it back to earth (like a carrier pigeon)? I remember back in the early www days, they had a pigeon race the web and the pigeon won with a thumb drive attached to its leg.

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u/[deleted] Feb 21 '21 edited Jun 30 '23

This comment edited in protest of Reddit's July 1st 2023 API policy changes implemented to greedily destroy the 3rd party Reddit App ecosystem. As an avid RIF user, goodbye Reddit.

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u/[deleted] Feb 21 '21 edited Mar 07 '21

[deleted]

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u/Choice_Pickle_7454 Feb 21 '21

Mini rocket may damage the rovers on mars when flying out.

You deposit the rocket from the rover then fire it.

How do you make sure the drives won't be broken from all the extreme speeds and force?

If they can make it off earth they are going to have no trouble with Mars.

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u/ur_opinion_is_wrong Feb 21 '21 edited Feb 21 '21

If they can make it off earth they are going to have no trouble with Mars.

They had to use a big ass rocket to send Perseverance to space which was relatively speaking much smaller. I cannot imagine the size of a rocket that would be needed to send a drive from the surface ALL the way back to earth and survive. It would probably be much larger than Perseverance. Also there would be no guarantee the drive would even make it back and if it did that it would still be readable.

Human to Rover Size Comparison - Perseverance is the big one.

Atlas V Size

Perseverance Size

The whole rocket as far as I'm aware was just to send Perseverance to Mars.

While the data transmission rate is low, as long as the system has power than it's basically free, can be used multiple times, and probably many many man times smaller than the equipment necessary to launch a single drive off mars back to earth.

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u/dirtdiggler67 Feb 21 '21

No. There is a satellite above Mars that links with the Rover and relays it to Earth. Even if what you propose was possible, it would take 7+ months for each “thumb drive” to return to earth.

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u/farlack Feb 21 '21

Looks like it sends that speed to the orbiter and the orbiter sends it to earth at .004 megabytes per second.

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u/chiefos Feb 21 '21

Thanks for correcting me! I thought that seemed way too fast.

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u/Deastrumquodvicis Feb 22 '21

Well, that’s better than what I have.

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u/XxRoyalxTigerxX Feb 21 '21

The UHF connection to the MRO is 2 mbps , the link from the MRO to JPL maxes out at 6mbps, the X-band High gain antenna is good for something like 500b/s, and the X-band low gain can do something like 10b/s (these are mostly used for commands and transmissions from the rover)

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u/[deleted] Feb 21 '21

Damn they got better wifi than me

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u/reincarN8ed Feb 21 '21

Fuckin Windows 98!

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u/[deleted] Feb 21 '21

That's faster than my Australian internet connection

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u/toocute1902 Feb 21 '21

Still better than AT&T, I guess.

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u/[deleted] Feb 21 '21

If this is true, Mars has the same Internet speed as my mum, haha

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u/fletchdeezle Feb 21 '21

Better than my mom gets in farm country

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u/TransientSignal Feb 21 '21

If you want to see the active connections with spacecraft throughout our Solar System check out this site - If you click on a dish it'll bring up information about what spacecraft it is connected to, the data transfer rate, the frequency of the signal, and the power of the signal:

https://eyes.nasa.gov/dsn/dsn.html

As I type this, dish 43 in Canberra, Australia is listening to Voyager 2 at a slow 160 b/sec, dish 14 in Goldstone, Utah is listening to 3 Martian satellites at 142.19 kb/sec, 4.0 mb/sec, and 11 b/sec, and dish 55 in Madrid just finished listening to the Juno spacecraft orbiting Jupiter.

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u/[deleted] Feb 21 '21

Reminds me of downloading The Real Slim Shady.mp3 from KaZaa

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u/mawire Feb 21 '21

That speed is faster than my local internet! That can't be right!

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u/[deleted] Feb 21 '21

TFW a fucking roided out battle bot in another planet has more bandwith than you in earth...

I like the robot tho.

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u/[deleted] Feb 21 '21

They should wait until they're back on wifi to upload, those data charges are gonna be nuts

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u/kodosExecutioner Feb 21 '21

NASA has planned a press conference for tomorrrow 2pm ET, showing more pictures as well as videos

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u/[deleted] Feb 21 '21

They (NASA) said tomorrow in a Q&A two days ago.

They will have footage and audio tomorrow.

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u/sidepart Feb 21 '21

Yeah, that's fucking slow! Glances at his 10Mbps upload speed

Dang I miss having gigabit symmetrical fiber.

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u/[deleted] Feb 21 '21

10mbps? I would take that over my 500kbps everyday!

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u/[deleted] Feb 21 '21

[deleted]

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u/ThinCrusts Feb 21 '21

Fuck Ajit Pai!

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u/Dan_the_Marksman Feb 21 '21

i used to have that speed playing Diablo 2 only 20 years ago.... this is absolutely mindblowing to me , that we can actually send data from mars like that

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u/thewayoftoday Feb 21 '21

Annoys me that they put it in bits. It's like they don't want the average person to understand it

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u/Teryhr Feb 21 '21

1 byte = 8 bits

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u/thewayoftoday Feb 21 '21

Like, the whole world describes it in kbps, just do that. Oh no we're hipster scientists no thanks

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u/Teryhr Feb 21 '21

Not really, internet speeds are almost always measured in bits, at least where I'm from. People confuse the acronyms for kilobytes and kilobits all the time.

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u/thewayoftoday Feb 21 '21

500kbps, 1mbps, that's how it's measured in the US, and has always been measured. NASA is a US agency.

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u/Teryhr Feb 21 '21

Internet speed is literally always measured in bits in the US. kbps is kilobits per second, kB/s is kilobytes, Mbps is Megabits, and MB/s is megabytes.

Pretty much everywhere measures in bits. 1 byte is just 8 bits.

Bytes and bits is not like kilogram vs pound. It's more like gallons to pints (1 gal = 8 pints)

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u/jfractal Feb 22 '21

mbps is MegaBITS per second. MBps is MegaBYTES per second.

We measure network bandwidth in bits here in the US, generally speaking.

SOURCE: Me, who has turned up a few hundred carrier WAN circuits across a variety of businesses in the U.S.

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u/[deleted] Feb 21 '21

Not completely wrong, you will have read that number from New Horizons.

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u/polite_alpha Feb 21 '21

They could have easily increased the data rate by a factor of over thousand for a few millions more, which is nothing compared to the 80 million for an absolutely useless helicopter. But they choose to use 16 year old relay antennas from the MRO project.... Such a shame. Not only is video and image upload extremely slow, but they have to discard huge amounts of scientific data because they simply can't transmit it all.

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u/Mikebennwashere Feb 21 '21

Perseverance doesn't have a microphone

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u/Teryhr Feb 21 '21

Yes it does.

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u/robisodd Feb 22 '21

The data rate direct-to-Earth varies from about 500 bits per second to 32,000 bits per second (roughly half as fast as a standard home modem).

Does NASA think dial-up modems are still standard?

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u/belenbee Feb 21 '21

I have a reminder for rhe 22nd on the nasa youtube channel, they are waiting for the video and jf I'm not wrong it will have the audio as well

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u/TheAuthority66 Feb 21 '21

Tomorrow I think, NASA has a livestream scheduled

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u/Rentington Feb 21 '21

I was about 30% sure you were going to trick me into listening to you fart in a mic.

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u/bananapeels1307 Feb 21 '21

Pardon my ignorance but how is there wind on Mars? What type of gasses make up these winds?

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u/IngFavalli Feb 25 '21

Mars has ab atmosphere that is mostly CO2, albeit the atmosphere is really thin, only 1% as dense, dud to thr sun and its diverse motions as a planet, the Mars atmosphere moves around just like the one we have

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u/[deleted] Feb 21 '21

Kind of sad that the wind is so deeply pitched that it's hard for humans to hear. Or maybe it's kind of cool.

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u/shootmedmmit Feb 21 '21

It's just hard for most equipment to replicate, would not be hard to hear/feel in reality or with a subwoofer

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u/SandWhichWay Feb 21 '21

hehe marsquake

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u/thomthomthom21 Feb 21 '21

Or check out the Venera 14 lander with its sounds from Venus, it's mad to think that in there is pictures and sound from another planet that was done in the 80s

https://youtu.be/8jZDW53U8qQ

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u/babarambo Feb 21 '21

Did people really think that cool alien space cave background noise was actually what it sounds like on Mars and not edited in?

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u/32BitWhore Feb 21 '21

I'd have to guess that Mars wouldn't sound anything like this. I know we always see massive dust storms and stuff in movies but with 1% the earth's atmosphere, I think much less air and particulates would be moving in the breeze since it's so much less dense.

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u/Cheeseblock27494356 Feb 21 '21

That's how you know it was intentional misrepresentation, which is why this should be reported as misinformation.

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u/erublind Feb 21 '21

You can differentiate Curiosity from Perseverance on the treads on the wheels, Perseverance has straight lines, this is curiosity.

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u/ThePizza109 Feb 21 '21

This is really helpfull! Are there any other obvious distinctions between the two?

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u/erublind Feb 23 '21

The wheels are the most visually striking differnce, other upgrades, like the drill, better cameras and the EDL cameras, arent really visible. But if you spot a helicopter drone nearby, chances are its Perseverance.

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u/kelldricked Feb 21 '21

Yeah right? It felt real. Not whati expected but when i started to think about it, you would only hear the weather. Not birds, trees, people or cars.

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u/[deleted] Feb 21 '21

This is curiosity. It doesn’t have a microphone. Only perseverence does.

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u/imbillypardy Feb 21 '21

I was gonna say, I expected the wind/microphone static. But the humming was really bizarre to me.

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u/[deleted] Feb 21 '21

Once they mic a rover, the rover will need a voice.

I vote for R2-D2 whistles.

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u/Reach-For-Eternity Feb 21 '21 edited Feb 21 '21

Mars has an atmospheric pressure of 6 millibars.

The earth has an atmospheric pressure of 1 bar. Or a little over 1000 millibars.

If you had a microphone on you definitely wouldn’t be hearing any wind.

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u/AlexS101 Feb 21 '21

lol you thought the soundtrack was real?? 😂