I think this might be what @Diannaochong remembers seeing - seasonal 'flows' of darkening soil on some Martian slopes. Seems it's still a bit of a mystery; some have suggested it might be brine, which could be a liquid at a lower temperature, but there was no water present according to the spectrometer on the MRO.
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Mr_Rose83 Blue Ridge Protects the HolyRegistered Userregular
There's no real reason it couldn't be ultra fine dust; get the right mixture of air into a rockslide and those flow like a liquid so fine dust plus low gravity = ?
I think it's the fact that the phenomenon cycles with the seasons that has them interested/puzzled. I don't know enough to know if that rules out dust or not.
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AegisFear My DanceOvershot Toronto, Landed in OttawaRegistered Userregular
I think this might be what @Diannaochong remembers seeing - seasonal 'flows' of darkening soil on some Martian slopes. Seems it's still a bit of a mystery; some have suggested it might be brine, which could be a liquid at a lower temperature, but there was no water present according to the spectrometer on the MRO.
Bingo, that's what I was thinking of. Brine triggered the memory.
"Some aspects of the observations still puzzle researchers, but flows of liquid brine fit the features' characteristics better than alternate hypotheses. Saltiness lowers the freezing temperature of water. Sites with active flows get warm enough, even in the shallow subsurface, to sustain liquid water that is about as salty as Earth's oceans, while pure water would freeze at the observed temperatures. " So it being a brine would explain why it wasn't frozen.
Edit: if its seasonal, could it be tilt based on the planets rotation, and the surface only gets warm enough in certain seasons to melt down, and collects higher up during other seasons? Ignoring the cycle of evaporation that is. I think they stated it only happens in certain areas.
I think this might be what @Diannaochong remembers seeing - seasonal 'flows' of darkening soil on some Martian slopes. Seems it's still a bit of a mystery; some have suggested it might be brine, which could be a liquid at a lower temperature, but there was no water present according to the spectrometer on the MRO.
Bingo, that's what I was thinking of. Brine triggered the memory.
"Some aspects of the observations still puzzle researchers, but flows of liquid brine fit the features' characteristics better than alternate hypotheses. Saltiness lowers the freezing temperature of water. Sites with active flows get warm enough, even in the shallow subsurface, to sustain liquid water that is about as salty as Earth's oceans, while pure water would freeze at the observed temperatures. " So it being a brine would explain why it wasn't frozen.
Edit: if its seasonal, could it be tilt based on the planets rotation, and the surface only gets warm enough in certain seasons to melt down, and collects higher up during other seasons? Ignoring the cycle of evaporation that is. I think they stated it only happens in certain areas.
So lets land another rover near by and take a look. If we can put on an olympics every 2 years, surely we can send a few more rovers, right? Right?
To be honest, I would think smart people would of thought of that already, and I was being lazy and hoping someone would already know or go do the research for me. /cough.
But I am totally down with sending a bunch of rovers. Because once theres multiple, they can race. That's much more awesome then the olympics.
To be honest, I would think smart people would of thought of that already, and I was being lazy and hoping someone would already know or go do the research for me. /cough.
But I am totally down with sending a bunch of rovers. Because once theres multiple, they can race. That's much more awesome then the olympics.
Also I can continue to phase humans out of my Facebook feed, and replace it entirely with Mars rovers.
To be honest, I would think smart people would of thought of that already, and I was being lazy and hoping someone would already know or go do the research for me. /cough.
But I am totally down with sending a bunch of rovers. Because once theres multiple, they can race. That's much more awesome then the olympics.
Brilliant! Martian rover races may be one of the best ways to get the rednecks to support space exploration
water sublimates from solid->gas at 600 pascals (right around 0C, actually), so there's probably no liquid water there:
I studied physics and some chemistry for several years and I never saw a chart like that, and yet it is so simple and obvious. Thanks for posting this.
water sublimates from solid->gas at 600 pascals (right around 0C, actually), so there's probably no liquid water there:
I studied physics and some chemistry for several years and I never saw a chart like that, and yet it is so simple and obvious. Thanks for posting this.
Man, that sucks - it's a great chart. I saw it in Chem 1 when they brought up the Triple Point.
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CaptainPeacockBoard Game HoarderTop o' the LakeRegistered Userregular
Ice-9 is in the midle left.
<.<
>.>
Cluck cluck, gibber gibber, my old man's a mushroom, etc.
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Zilla36021st Century. |She/Her|Trans* Woman In Aviators Firing A Bazooka. ⚛️Registered Userregular
I was watching Ann Druyan (Carl Sagan's widow) talk about this earlier (@ Planetfest 2012), as well as Seth MacFarlane, talking about the importance of this mission, and also the work they're doing on the new 'Cosmos' (which will be presented by Neil deGrasse Tyson *nerdgasm*).
Utterly, profoundly amazing, especially everything that Ann Druyan had to say. 8->
Could you give me a direct link to that video? I can't seem to find it, and I'd love love love to see it. Thanks.
Aha! Found it. Took them a while to put it on youtube.
To be honest, I would think smart people would of thought of that already, and I was being lazy and hoping someone would already know or go do the research for me. /cough.
But I am totally down with sending a bunch of rovers. Because once theres multiple, they can race. That's much more awesome then the olympics.
Brilliant! Martian rover races may be one of the best ways to get the rednecks to support space exploration
Pretty sure they would have to get beer in space also for that to happen. :P
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Zilla36021st Century. |She/Her|Trans* Woman In Aviators Firing A Bazooka. ⚛️Registered Userregular
To be honest, I would think smart people would of thought of that already, and I was being lazy and hoping someone would already know or go do the research for me. /cough.
But I am totally down with sending a bunch of rovers. Because once theres multiple, they can race. That's much more awesome then the olympics.
Brilliant! Martian rover races may be one of the best ways to get the rednecks to support space exploration
Pretty sure they would have to get beer in space also for that to happen. :P
Mr_Rose83 Blue Ridge Protects the HolyRegistered Userregular
See, I'd never heard of baumgartner before a month ago and I forgot he existed again until just now. I've never forgotten who Chuck Yeager, Yuri Gagarin, and Neil Armstrong are, and I never will.
Baumgartner doesn't even realize that he's betrayed his true intentions with that jump by making those statements--it's clear now that he's just some adrenaline junkie who used the whole "testing a new pressure suit" thing as a means to get his fix.
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Zilla36021st Century. |She/Her|Trans* Woman In Aviators Firing A Bazooka. ⚛️Registered Userregular
edited October 2012
Disappointing to hear.
For people like Felix: If anyone ever tells you that space exploration is a useless endeavour, you send them right here:
UC San Diego is doing a webinar today with a lead mission control engineer from the mars landing at 1200 pacific. I won't be able to catch it due to class, but it sounds interesting.
MARS LANDING PRESENTATION: Hear from a young and dynamic lead engineer behind the most complex landing ever accomplished on Mars. NASA/JPL’s Brian Schratz will give a first-hand account of what it was like to work in mission control the night the Mars Science Laboratory (MSL) landed. Brian will discuss the MSL mission and Entry Descent & Landing telecommunications. His presentation will show the varied emotions among NASA/JPL mission control staff--ranging from anxiety to relief to celebration as each of the teams' tasks was accomplished. Included are reactions from around the world to news of the successful landing.
Mr_Rose83 Blue Ridge Protects the HolyRegistered Userregular
I have doubts regarding the energy requirements of laser sintering actual lunar soil vs. NASA's simulants because I happen to know NASA make three different ones because they've never made one that works exactly right. Specifically they have one that reflects light the right way, one that crunches underfoot the right way, and one that looks right on TV. And it looks like these guys used the TV version when they ought to have used a blend of the first two.
Or, you know, actual moon rock, since we have that.
Well the problem with actual moon rock is that we don't have that much of it to just use it for whatever
Which is why I propose that the next time we land on the moon we establish a moon mining base that will catapult rocks back to Earth. Along with cheese (moon cheese can be sold to offset costs).
The space plane, dubbed Skylon, only exists on paper. What the company has right now is a heat exchanger that is able to cool air sucked into the engine at high speed from 1,000 degrees Celsius to minus 150 degrees (1,800 degrees Fahrenheit to 238 below zero F) in one-hundredth of a second.
I mean, if its feasible in a real world, non lab setting awesome, and the ESA seems to be saying it is, but that still seems to be an order of magnitude of cooling that doesn't seem possible.
Liquid <gas> filled tubes maybe. The specific heat of a cubic metre of air at 1000C to 0 is only 500 or so kJ. Keeping those tubes cooled for a long flight though might get tricky
Yeah, I mean I know its not that much of a feat to do it one time, at a hundreth of a second.....but to do it for the duration of flight from ground, to upper atmosphere, to when it adds hydrogen to the exit gases and combusts it, and finally starts spooling back the fan/jet portion of the engine.....seems like some pretty large leaps.
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If the official scientific name for this planet is not Chiron I am going to be incredibly disappointed.
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Bingo, that's what I was thinking of. Brine triggered the memory.
"Some aspects of the observations still puzzle researchers, but flows of liquid brine fit the features' characteristics better than alternate hypotheses. Saltiness lowers the freezing temperature of water. Sites with active flows get warm enough, even in the shallow subsurface, to sustain liquid water that is about as salty as Earth's oceans, while pure water would freeze at the observed temperatures. " So it being a brine would explain why it wasn't frozen.
Edit: if its seasonal, could it be tilt based on the planets rotation, and the surface only gets warm enough in certain seasons to melt down, and collects higher up during other seasons? Ignoring the cycle of evaporation that is. I think they stated it only happens in certain areas.
So lets land another rover near by and take a look. If we can put on an olympics every 2 years, surely we can send a few more rovers, right? Right?
But I am totally down with sending a bunch of rovers. Because once theres multiple, they can race. That's much more awesome then the olympics.
Chiron is the one a bit further out isn't it, sure the had the names for the others. Is Nessus the moon or their 'Mars'?
Also I can continue to phase humans out of my Facebook feed, and replace it entirely with Mars rovers.
Brilliant! Martian rover races may be one of the best ways to get the rednecks to support space exploration
I studied physics and some chemistry for several years and I never saw a chart like that, and yet it is so simple and obvious. Thanks for posting this.
Man, that sucks - it's a great chart. I saw it in Chem 1 when they brought up the Triple Point.
<.<
>.>
Pretty sure they would have to get beer in space also for that to happen. :P
'Wet burps'... :P
Amazingly, my respect for him has dropped faster than he did a few weeks ago.
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Nintendo Network ID: AzraelRose
DropBox invite link - get 500MB extra free.
For people like Felix: If anyone ever tells you that space exploration is a useless endeavour, you send them right here:
http://www.ridingwithrobots.org/earth/ & http://goo.gl/PzNrE
http://casgc.ucsd.edu
MARS LANDING PRESENTATION: Hear from a young and dynamic lead engineer behind the most complex landing ever accomplished on Mars. NASA/JPL’s Brian Schratz will give a first-hand account of what it was like to work in mission control the night the Mars Science Laboratory (MSL) landed. Brian will discuss the MSL mission and Entry Descent & Landing telecommunications. His presentation will show the varied emotions among NASA/JPL mission control staff--ranging from anxiety to relief to celebration as each of the teams' tasks was accomplished. Included are reactions from around the world to news of the successful landing.
Or, you know, actual moon rock, since we have that.
Nintendo Network ID: AzraelRose
DropBox invite link - get 500MB extra free.
Which is why I propose that the next time we land on the moon we establish a moon mining base that will catapult rocks back to Earth. Along with cheese (moon cheese can be sold to offset costs).
http://www.msnbc.msn.com/id/50002675/ns/technology_and_science-space/
I mean, if its feasible in a real world, non lab setting awesome, and the ESA seems to be saying it is, but that still seems to be an order of magnitude of cooling that doesn't seem possible.