Mars Rover landing 3:55pm Eastern

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Re: Mars Rover landing 3:55pm Eastern

#226

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The location of the "parts" from the stream earlier today

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Re: Mars Rover landing 3:55pm Eastern

#227

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Animal wrote: Mon Feb 22, 2021 9:35 pm nasa is going to have to seriously look into building these crafts out of biodegradable materials. What a mess they have made.
See post #50 on page 2
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Re: Mars Rover landing 3:55pm Eastern

#228

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woohooguy wrote: Mon Feb 22, 2021 9:29 pm
Animal wrote: Mon Feb 22, 2021 9:19 pm
CentralTexasCrude wrote: Mon Feb 22, 2021 8:51 pm
Animal wrote: Mon Feb 22, 2021 8:47 pm
woohooguy wrote: Mon Feb 22, 2021 8:41 pm To give everyone a better idea how big that "descent stage" rocket pack really is

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Each one of those hydrazine engines is about the size of a person with the nozzels.
Is that the thing they called the sky crane?
Yeah, it's the thing that actually lowered the Rover, then flew off. Edit: If you go back and watch the landing video again, right when the Rover lands, for about 1 second they pan up and show the sky crane flying off.
and so what happened to it? Did it just go crash somewhere or did it go land somewhere for something in the future?
It peeled off to fly away and it crashed some ways away to not interfere or possibly damage the Rover.
They should have flown it off and crashed it into the Chinese lander.
wut?
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Re: Mars Rover landing 3:55pm Eastern

#229

Post by Reservoir Dog »

CentralTexasCrude wrote: Mon Feb 22, 2021 10:47 pm
Animal wrote: Mon Feb 22, 2021 9:35 pm nasa is going to have to seriously look into building these crafts out of biodegradable materials. What a mess they have made.
See post #50 on page 2
The Mars tourism industry may never recover.
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Re: Mars Rover landing 3:55pm Eastern

#230

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Reservoir Dog wrote: Mon Feb 22, 2021 11:03 pm
CentralTexasCrude wrote: Mon Feb 22, 2021 10:47 pm
Animal wrote: Mon Feb 22, 2021 9:35 pm nasa is going to have to seriously look into building these crafts out of biodegradable materials. What a mess they have made.
See post #50 on page 2
The Mars tourism industry may never recover.
The government should contract with Carnival to design the first Mars ship to book curious travelers. I bet they could get the price point down to around $1200 per adult with an interior room and no view.
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Re: Mars Rover landing 3:55pm Eastern

#231

Post by woohooguy »

Animal wrote: Mon Feb 22, 2021 11:10 pm
Reservoir Dog wrote: Mon Feb 22, 2021 11:03 pm
CentralTexasCrude wrote: Mon Feb 22, 2021 10:47 pm
Animal wrote: Mon Feb 22, 2021 9:35 pm nasa is going to have to seriously look into building these crafts out of biodegradable materials. What a mess they have made.
See post #50 on page 2
The Mars tourism industry may never recover.
The government should contract with Carnival to design the first Mars ship to book curious travelers. I bet they could get the price point down to around $1200 per adult with an interior room and no view.
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Re: Mars Rover landing 3:55pm Eastern

#232

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Just don't let Howards date drive it.
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Re: Mars Rover landing 3:55pm Eastern

#233

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The first audio recording of a sound from another planet
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Re: Mars Rover landing 3:55pm Eastern

#234

Post by Animal »

that might have been a bit anti-climactic. no peegasms were had during the listening to that.
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Re: Mars Rover landing 3:55pm Eastern

#235

Post by CentralTexasCrude »

Animal wrote: Tue Feb 23, 2021 4:15 am that might have been a bit anti-climactic. no peegasms were had during the listening to that.
What did you expect to hear. Howling monkeys way off in the distance?
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Re: Mars Rover landing 3:55pm Eastern

#236

Post by Wut »

That’s pretty cool. I read that the daytime temperature on the equator on Mars is about 70 so you could walk around in shorts and a t shirt. Until night, then you would freeze to death.
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Re: Mars Rover landing 3:55pm Eastern

#237

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Wut wrote: Tue Feb 23, 2021 5:02 pm That’s pretty cool. I read that the daytime temperature on the equator on Mars is about 70 so you could walk around in shorts and a t shirt. Until night, then you would freeze to death.
Sounds like Texas
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Re: Mars Rover landing 3:55pm Eastern

#238

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disco.moon wrote: Tue Feb 23, 2021 6:53 pm
CentralTexasCrude wrote: Tue Feb 23, 2021 4:11 am The first audio recording of a sound from another planet
I find this so incredible. I've listened over and over. *possible stupid question* coming I mean, space is a vacuum, so how is there sound? I'm amazed that we can even record sound on Mars. Is this the first time ever hearing space?

Mars has a thin atmosphere so you still can hear sound. It would probably be much fainter and higher pitch than you would hear e on Earth
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Re: Mars Rover landing 3:55pm Eastern

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disco.moon wrote: Tue Feb 23, 2021 6:53 pm
I find this so incredible. I've listened over and over. *possible stupid question* coming I mean, space is a vacuum, so how is there sound? I'm amazed that we can even record sound on Mars. Is this the first time ever hearing space?
Mars has a very thin atmosphere, mostly carbon dioxide. After the core of Mars cooled, it lost its magnetic field and lighter gasses were either stripped or floated away. Being mostly CO2, sounds will not sound the same as on earth. The atmosphere being less dense means sound travels slower, around 500 mph, and it does not carry higher pitched noises very well, so all sounds would "sound" lower.
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Re: Mars Rover landing 3:55pm Eastern

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Someone noticed the rover has a family of rover stickers -

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Re: Mars Rover landing 3:55pm Eastern

#241

Post by Reservoir Dog »

woohooguy wrote: Tue Feb 23, 2021 7:10 pm Someone noticed the rover has a family of rover stickers -

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Is the last one shitting out the helicopter? :lol:
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Re: Mars Rover landing 3:55pm Eastern

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NAUGHTY 'NAUTS Sex robots ‘will colonise MARS’ says love-bot tester who spent $200,000 on droids
The future of the human race could depend on bonking bots...

https://www.thesun.co.uk/tech/7458402/s ... l-harmony/
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Re: Mars Rover landing 3:55pm Eastern

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disco.moon wrote: Tue Feb 23, 2021 7:17 pm
woohooguy wrote: Tue Feb 23, 2021 7:10 pm
disco.moon wrote: Tue Feb 23, 2021 6:53 pm
I find this so incredible. I've listened over and over. *possible stupid question* coming I mean, space is a vacuum, so how is there sound? I'm amazed that we can even record sound on Mars. Is this the first time ever hearing space?
Mars has a very thin atmosphere, mostly carbon dioxide. After the core of Mars cooled, it lost its magnetic field and lighter gasses were either stripped or floated away. Being mostly CO2, sounds will not sound the same as on earth. The atmosphere being less dense means sound travels slower, around 500 mph, and it does not carry higher pitched noises very well, so all sounds would "sound" lower.
Thanks :) it's really fascinating.
When I read this stuff, I think about technical divers who use helium with their oxygen when deep diving (actually called Trimix-though the stuff that has no nitrogen is apparently called Heliox). They sound like Alvin and the Chipmunks when talking to topside. :lol:

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Re: Mars Rover landing 3:55pm Eastern

#244

Post by Animal »

woohooguy wrote: Tue Feb 23, 2021 7:10 pm
disco.moon wrote: Tue Feb 23, 2021 6:53 pm
I find this so incredible. I've listened over and over. *possible stupid question* coming I mean, space is a vacuum, so how is there sound? I'm amazed that we can even record sound on Mars. Is this the first time ever hearing space?
Mars has a very thin atmosphere, mostly carbon dioxide. After the core of Mars cooled, it lost its magnetic field and lighter gasses were either stripped or floated away. Being mostly CO2, sounds will not sound the same as on earth. The atmosphere being less dense means sound travels slower, around 500 mph, and it does not carry higher pitched noises very well, so all sounds would "sound" lower.
What if you shot a bullet on Mars. Say an AR-15. On earth you chornograph the bullet at 2700 fps. Would that same bullet travel slower on Mars?
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Re: Mars Rover landing 3:55pm Eastern

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Post by FSchmertz »

Animal wrote: Tue Feb 23, 2021 8:38 pm
woohooguy wrote: Tue Feb 23, 2021 7:10 pm
disco.moon wrote: Tue Feb 23, 2021 6:53 pm
I find this so incredible. I've listened over and over. *possible stupid question* coming I mean, space is a vacuum, so how is there sound? I'm amazed that we can even record sound on Mars. Is this the first time ever hearing space?
Mars has a very thin atmosphere, mostly carbon dioxide. After the core of Mars cooled, it lost its magnetic field and lighter gasses were either stripped or floated away. Being mostly CO2, sounds will not sound the same as on earth. The atmosphere being less dense means sound travels slower, around 500 mph, and it does not carry higher pitched noises very well, so all sounds would "sound" lower.
What if you shot a bullet on Mars. Say an AR-15. On earth you chornograph the bullet at 2700 fps. Would that same bullet travel slower on Mars?
You'd think it might travel faster. It sure as hell could travel farther, since there's less air resistance (not to mention the lower gravity too).

P.S. Searching, and the gravity seems to be more important (62% less), and mostly on distance of travel
Last edited by FSchmertz on Tue Feb 23, 2021 8:49 pm, edited 1 time in total.
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Re: Mars Rover landing 3:55pm Eastern

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Less atmosphere for resistance less gravity to pull it down to the surface so it would go faster and farther. You would also be able to jump farther as in the documentary John Carter of Mars
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Re: Mars Rover landing 3:55pm Eastern

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Stapes wrote: Tue Feb 23, 2021 8:48 pm Less atmosphere for resistance less gravity to pull it down to the surface so it would go faster and farther. You would also be able to jump farther as in the documentary John Carter of Mars
So, why doesn't sound travel faster on Mars?
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Re: Mars Rover landing 3:55pm Eastern

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Animal wrote: Tue Feb 23, 2021 8:55 pm
Stapes wrote: Tue Feb 23, 2021 8:48 pm Less atmosphere for resistance less gravity to pull it down to the surface so it would go faster and farther. You would also be able to jump farther as in the documentary John Carter of Mars
So, why doesn't sound travel faster on Mars?
Sound is a mechanical wave, which means that it needs substance to travel through, such as air or water.
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Re: Mars Rover landing 3:55pm Eastern

#249

Post by CentralTexasCrude »

These have also been videotaped on Mars
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Re: Mars Rover landing 3:55pm Eastern

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Post by Stapes »

Animal wrote: Tue Feb 23, 2021 8:55 pm
Stapes wrote: Tue Feb 23, 2021 8:48 pm Less atmosphere for resistance less gravity to pull it down to the surface so it would go faster and farther. You would also be able to jump farther as in the documentary John Carter of Mars
So, why doesn't sound travel faster on Mars?
My understanding is that temperature has a lot to do with the speed of sound waves...... so it's pretty cold on Mars... hence the speed of sound would be a little slower. I'm sure woohoo guy will come in and set it straight
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