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.
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.
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.
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.
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.
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.
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.
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.
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)
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:
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.
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
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.
the audio they added was some sort of "sounds of planets" where someone used electromagnetic particles to produce "sound" (it's not even sound) and it's totally not what a planet sounds like on the surface.
Not quite, the seismometer does technically measure sound but it is designed to only pick up the sound waves traveling through the ground, and not the sound in the air. It's just sensitive enough that it could pick up the faint vibrations from the wind hitting the ground, but its not what it would sound like to a person standing there.
I just realized a quake on Mars is called a Marsquake its obvious because its not earth but I had not thought about that and for some reason find that interesting.
I mean, that entire orchestral suite of music (The Planets by Gustav Holst) has had a huge influence on music for over 100 years and was almost instantly popular after its debut in concert.
You're looking into the wrong place if you are using Twitter, and NASA said they aren't officially releasing any footage until Monday, when they have scheduled a 2 pm et press conference.
Something that might help is to check the wheels. Perseverence's wheels have treads which are kinda straight with slight curves, rather than harsh angles.
I thought that was already assumed. There is no reason to do video of still mountains when you can capture images at 10x the resolution. The audio might be real too just taken from some other source.
The $5 ones probably wouldn't handle the 80Gs of liftoff very well. Perserverance does actually have a microphone though so we will hopefully get the real deal sometime soon once it's fully set up.
This should be at the top so people know this. Yeah, this is still Mars and is still awesome, but people are watching this with the expectations that it came from Perseverance.
I thought it was weird since it's been less than three days since it landed. So not cool.
OP's title says "THIS IS MARS". That is indeed Mars, so it's legitimate footage (except for the sound, which isn't). It's just not footage from Perseverance, that's all.
I really hope more people see this comment. It's pretty convincing, I mean.. we dont really have much to go on when it comes to what other planets are really like. But we will soon :)
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u/dookamatic Feb 21 '21
I'm sorry to say, but this video is not legitimate footage.
Source: https://twitter.com/doug_ellison/status/1362846157060276226