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Bert22306
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CEO
Lack of magnetic field
Bert22306   8/29/2014 6:00:10 PM
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Fascinating stuff, as always.

I think one problem with Mars is that it lacks a magnetic field. It's the magnetic field we have on earth that protects us from solar radiation, in addition to keeping the atmosphere from being blown away gradually.

Also, it sh/would be a surprise if all rocky planets, such as Mars and Venus, didn't have a hot core. My bet is that they're formed much like Earth.

DrFPGA
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Blogger
Re: Lack of magnetic field
DrFPGA   8/30/2014 6:59:50 PM
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Maybe the electromagnetic power source listed in the article could be used to power a planet sized magnet to reduce radiation levels. Might need lots of CU wire however...

kfield
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Re: Lack of magnetic field
kfield   8/31/2014 10:51:32 AM
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@Bert22306 "I  think one problem with Mars is that it lacks a magnetic field. It's the magnetic field we have on earth that protects us from solar radiation, in addition to keeping the atmosphere from being blown away gradually."

I was at Luke's talk and he showed a slide with a guy in what looked like either a cleanroom or cold weather suit during testing of the rover. But Luke pointed out it was a "Sun protection suit" as they were simulating the amount of solar radiation on Mars, given the weak atmosphere.

AZskibum
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CEO
Re: Lack of magnetic field
AZskibum   8/31/2014 9:53:12 PM
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A hot core would certainly be a convenient heat & power source for future colonization missions.

ost0
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CEO
Re: Lack of magnetic field
ost0   9/1/2014 3:41:30 AM
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I guess heat alone isnt that exiting. To get power from it, you need the cold too. Air cooling is probably not very efficient at Mars. I'm not sure how efficient static sand is as a heat sink.

goafrit
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Manager
Re: Lack of magnetic field
goafrit   9/1/2014 7:35:24 PM
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>> Air cooling is probably not very efficient at Mars

Even it is, you cannot rely on that. The best is still to redesign to be hardened as trusting the natural cooking system will be a recipe for disaster.

wilber_xbox
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Manager
Mars mission success
wilber_xbox   8/31/2014 8:39:10 AM
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I had high hopes that mars mission will start the kind of space race that moon landing did. That was also the time that lead to the birth of today's electronics and telecommunication technology. 

kfield
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Re: Mars mission success
kfield   8/31/2014 10:53:04 AM
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@wilbur_xbox "I had high hopes that mars mission will start the kind of space race that moon landing did."

I agree - the moon landing produced the highest number of enigneering graduates in the US (counting anyone old eough to have been witnessing the moon landing) and a Mars challenge would I think do the same.

Bert22306
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CEO
Re: Mars mission success
Bert22306   8/31/2014 6:20:10 PM
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Indeed, who would have thunk, back in 1969, that by 2014 we wouldn't have had anyone on any other rock out there, other than the moon?

But my question is, imagine if the guy on this mission to Mars gets a toothache? A Mars mission would take more than a year, depending on timing specifics.

Also, I can't tell how real this is, or whether people tend to not use their heads before they say things, but supposedly many people would be glad to go on one of these space adventures, even if they knew they could never come back. Just for the name they would get.

I have my doubts, but that's what many apparently claim.

kfield
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Blogger
Re: Mars mission success
kfield   8/31/2014 10:05:22 PM
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@bert22306 "Also, I can't tell how real this is, or whether people tend to not use their heads before they say things, but supposedly many people would be glad to go on one of these space adventures, even if they knew they could never come back. Just for the name they would get"

Bert22306, it's real. I first heard about people clammoring for a one-way trip to Mars from NASA's Luke Dubord last week when he spoke about the Mars Mission. Then I looked it up - and the non-profit organization "Mars One," a Netherlands-based non-profit organization, plans to send four people to the Red Planet in 2024, with the hopes of establishing the first human colony there. 


From a CBS report:

"As it turns out, more than 200,000 people from all over the world applied to be Mars One astronauts. For Hew Nau, one of those applicants, the idea of the mission is simultaneously terrifying and exhilarating."

 

 

Wnderer
User Rank
CEO
Siding Spring
Wnderer   9/1/2014 9:13:17 AM
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The big event at Mars this year is the close encounter in October with a comet with a name like a housing development, 'Siding Spring'. The comet will pass ten times closer to Mars then a comet has come close to Earth in human history. NASA is now working on repurposing its spacecraft to observe the comet. This is challenging, since the spacecraft were not designed for these kind of observations. They don't expect to get pictures like Rosetta, but the data they collect will provide an important addition to the other comet observations. This is believed to be the first time Siding Spring has entered the inner solar system and the data collected should help understand how comets evolve as they make a number of orbits near the Sun.

David Ashton
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Blogger
Re: Siding Spring
David Ashton   9/1/2014 6:11:08 PM
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@Wnderer - "Siding Spring" is not a housing development, it is an observatory about 250Km north of where I live in Australia, and the one where this comet was discovered.  I have visited and it is fairly impressive, the largest telescope is 3.9 Metres.  The observatory was almost devastated by a huge bushfire there in 2013 but survived with the loss of only a couple of outbuildings.

Wnderer
User Rank
CEO
Re: Siding Spring
Wnderer   9/1/2014 6:22:14 PM
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@David Ashton -- Siding Spring" is not a housing development, it is an observatory...


Thanks. It is a place name! I assumed it was named after a couple of astronomers, Dr Siding and Dr Spring. LOL

 

David Ashton
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Blogger
Re: Siding Spring
David Ashton   9/1/2014 6:31:40 PM
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@Wnderer - well I did try to find where the name came from, presumably there is a spring on or near the mountain where the observatory is sited, but I could not find anything at all in a quick search.   I'll try and dig a bit more.

AB345
User Rank
Rookie
Are There Marsquakes on Mars?
AB345   9/1/2014 5:25:42 PM
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Way I see it. phtt, there sure as hell ain't any here on Earth.



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