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Image captured by Phoenix Mars lander  (Source: NASA)
There have been numerous traces of possible water on Mars, but astronomers are still looking for definitive proof

Researchers believe they have found evidence of liquid salt water on the Red Planet of Mars, with the discovery thanks to the NASA's Phoenix Mars lander.

Several images captured by Phoenix show what appear to be water droplets located on one of the rover's landing struts, which now makes researchers believe there could be liquid water somewhere under the surface of the planet.

"A large number of independent physical and thermodynamical evidence shows that saline water may actually be common on Mars," according to University of Michigan professor Nilton Renno.  "Liquid water is an essential ingredient for life.  This discovery has important implications to many areas of planetary exploration, including the habitability of Mars."

Renno worded his report very carefully, explaining that the discovery has "important implications," but not outright saying it's proof of water liquid.

Although the temperature in the northern plains of Mars didn't go above minus 15 degrees Fahrenheit while the Phoenix was there for a six-month period in 2008, researchers still believe there could be pockets of water under the surface.  The presence of high amounts of salt may have caused the freezing temperature of water on Mars down to minus 90 degrees, which is about 120 degrees colder than Earth's 32 degree freezing temperature for water.

There are numerous spots on Mars that could be salty enough that it's unlikely they'll be able to freeze without the temperature dropping to minus 100 degrees or further, scientists said.

The report is still highly controversial, despite 22 different scientists signing onto the report -- NASA never brought up the discovery, seeing how the evidence may not be enough.

Each discovery of possible signs of liquid water or ice helps researchers hone in on locations space probes and satellites can examine during future missions.

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RE: Please use ISO units
By TA152H on 3/19/2009 11:52:31 AM , Rating: 2
Actually, since it's an article that people can relate to, it's much more meaningful in Fahrenheit. If someone said, it's -5c, it's not going to have the same visceral effect as using a measurement most people understand. If it were something like the temperature of a star being more, or something with numbers that wouldn't really have any meaning (I can't relate to 5000 degrees in any measurement), I think it would make more sense. But people can "feel" -15 degrees F, and to me, that's what makes the difference.

I think author made a good choice.

RE: Please use ISO units
By aegisofrime on 3/19/2009 12:03:05 PM , Rating: 2
You are assuming that everybody that reads Dailytech is American?

RE: Please use ISO units
By theapparition on 3/19/2009 1:07:12 PM , Rating: 4
I have no problem with the assumption that people who read German tech/science sights are German. Since DailyTech is American, I see no reason why it should cater towards other nationalities. I'd wager that well over 90% of respondants here are Americans. All of a sudden, everyone wants to cater to the minority. Wrong, cater towards the majority.

Of course everyone is welcome to read/participate in any discussion, but there should be an understanding that if you visit an American site, you will be subjected to American customs.

For as wrong as it is, Americans still use the Farenheit scale for temperature measurement. I'll praise the day when we accept Celsius, but until then, giving Farenheit measurements on an American run website seems appropriate.

RE: Please use ISO units
By gmyx on 3/19/2009 3:17:05 PM , Rating: 4
I'd bet willing to bet that Americans don't come close to 90% of this site's users. Only someone with access to the servers could tell us that.

RE: Please use ISO units
By Murloc on 3/19/2009 3:37:08 PM , Rating: 2
but this site maybe is international, I think they should put SI measures and american measures in brackets.
there isn't a site like this in my mother language, and I fully understand only articles in english or my mother language.

I'll praise the day when we accept Celsius

I saw this on encarta dictionary: "6. politics proposal of legislation by citizens: a process valid in many US states and in Switzerland that allows citizens to propose legislation by petition "
Why don't you make an initiative to adopt SI measures?
it would be a nice step towards modernization.

RE: Please use ISO units
By theapparition on 3/19/2009 5:06:12 PM , Rating: 2
Because in the US, statewide regulation of units would be illegal. It has to happen at the federal level, since measurement standards are controled at the US government level.

Still, without much popular support, suggesting such legislation would be impractical at best.

I think the far better thing is for companies to adopt metric practices. That will lead to eventual adoption of metric by the general public.

RE: Please use ISO units
By KashGarinn on 3/20/2009 5:18:07 AM , Rating: 2
It wouldn't work.

The thing is, if you want to switch systems, you have to COMPLETELY STOP using the older one and start using the new one.

Canada did this, and it worked.

U.S. tried this a long time ago: - But they failed because they didn't realize that while you can convert from one to other, you won't ever completely go over to the new system, as you're always converting, and you'll never stop converting.

If U.S. would just stop completely using the old system, and start with the metric system, then you'd finally use it, but until that happens, you won't.

There are benefits to this in a global society that we speak a common language we all understand, within any metric.

If you disagree, then please reply with your argument in Icelandic, a language which is by far better than English.

RE: Please use ISO units
By ninus3d on 3/20/2009 10:18:58 AM , Rating: 2
There are no European equivalent as good as DailyTech and very few of the "localized" pages even come close.
Internet really isn't about localization and when was it ever?

If there was a page on the same bar as DailyTech hosted in Europe the base of preference would most likely not be whether you were American or European but more or less as randomly as whether you are an Ati or Nvidia fan.

RE: Please use ISO units
By CityZen on 3/20/2009 12:18:49 PM , Rating: 3
I'd wager that well over 90% of respondants here are Americans

It just so happens that you'd lose the wager :D

See Alexa's traffic details of DailyTech:

You can quickly discover that only 52% of DailyTech are Americans. A healthy 48% are NOT Americans. Yes, that is still a majority, albeit a very slim one.
However, even if Americans were only 30% of the readership, I guess this site would still have to use the Fahrenheit scale, given that most Americans are incapable of understanding a temperature in Celsius degrees. On the other hand, most international readers who visit this site are probably able to understand the unscientific Fahrenheit scale (and yes, this is a wager of mine). So it's just case of adjusting to the lower standard :)

In any case, given that the American - international readership is almost a 50-50 split, this article would have been much clearer if temperatures had been given in both scales and displaying in each case the proper degree symbol.
For example: "down to minus 90ºF (-68 C)", instead of just "down to minus 90 degrees".
Is it THAT difficult?

RE: Please use ISO units
By Seemonkeyscanfly on 3/19/2009 4:59:04 PM , Rating: 2
Hmmmm... Do not know if what he said would assume that everybody that reads dailytech is American. However from what you said, I can conclude you believe all Americans are from the USA. There are over 40 countries in the Americas... All their citizens are Americans, but not all use the same standards.

RE: Please use ISO units
By gmyx on 3/19/2009 3:15:03 PM , Rating: 3
Ok then, since this is Science after all, use Kelvin! I think 'most' people understand Celsius better then Fahrenheit. I'm not sure how many countries still use F instead of C but I'd wager C has must broader use than F.

"I'm an Internet expert too. It's all right to wire the industrial zone only, but there are many problems if other regions of the North are wired." -- North Korean Supreme Commander Kim Jong-il
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