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But how do we know this is water? The context is the key. Gullies indicate the flow of a liquid. Dust avalanches do occur on Mars, but not anywhere near these gullies. The morphology (shape) is important too. See how the gully breaks up as it flows down the slope? That also indicates a fluid flow. Finally, the color is an indicator, too. The light color is difficult to make on Mars. In trenches, most places where the surface dust is disturbed, and impact craters, the underlying layers are almost always dark. This indicates a different process. Also, numerical calculations using models indicate that whatever caused these gullies flowed like water, not like dust or rocks.
Well, we’ve known of frozen water on Mars for decades, and we know there was activity in the past. These new observations indicate that things are happening on Mars now, within the past few years. And whatever it is that’s happening, it’s releasing water onto the surface, which in turn means that there is water just below the surface of Mars, at least in some places.
www.badastronomy.com...
Originally posted by Comatose
Just about the Nasa Mars landscape images... What process did you use to alter the colours?
I do believe you get a more accurate result by using the "auto levels" feature in Photoshop.
I think the red hue in the original Nasa photo is from the lighting conditions, not from tampering. Try running one of your own "washed out" images from home through the same process.
[edit on 5-4-2008 by Comatose]
Originally posted by Dark_Ace
off tpoic. wow you have your own forum. finanly your talent has ben recognised
I said "your" picture for two reasons: 1 - It was you who posted it; 2 - You did not take the photo.
Originally posted by Woodlock
But you said;
"your" picture?
Thee picture.
You've never seen a "picture" like mine, like this pic. I said "pic". Pic means; take a good look.
Once more, I am not sure if I am understanding what you say. I know that those images are from scientific data, and I know that they are not presented in JPEG format. I don't know what work you put to it and I was not disregarding it; even if you had just found that image, the act of posting it to back up your ideas would be enough for me to give you credit for it.
This pic is a photo made with a camera that comes from scientific correct data. You haven't seen a photograph, a digital image photograph like this. If you knew the work put it to this !?# get on my bad side? will u?
I see what looks like fog or low clouds.
Tell me this. Just what do you see when you see all that white at the bottom of the photo.
I don't deny anything, I only doubt it.
You see what you want to see. You can deny my presumptions if you like. It's not my fault you don't add up the facts.
I don't
Don't feel bad.
Why do you say that? Is from an official source, so I suppose it's real data.
Nobody knows this is real data. Go look at Malin's.
Originally posted by Woodlock
reply to post by ArMaP
You're in the deep-end ArMap better turn around.
Originally posted by Essan
I remain adamant that the truth is far more prosaic - we are free to claim that circumstantial evidence is proof, whereas scientists prefer to be absolutely sure before making such a monumental annoucement.
Edit: forgot to say - congrats on getting your own forum! Well deserved (even if I tend to disagree with you more often than not!)
Donald L. Savage
Headquarters, Washington, DC
James Hartsfield
Johnson Space Center, Houston, TX
(Phone: 713/483-5111)
David Salisbury
Stanford University, Palo Alto, CA
RELEASE: 96-160
METEORITE YIELDS EVIDENCE OF PRIMITIVE LIFE ON EARLY MARS
A NASA research team of scientists at the Johnson Space
Center (JSC), Houston, TX, and at Stanford University, Palo
Alto, CA, has found evidence that strongly suggests primitive
life may have existed on Mars more than 3.6 billion years ago.
More....
Originally posted by mikesingh
Seriously, I wish all these Viking images of the clouds were in color. How about color images of the clouds from Opportunity? Can you get hold of some?
Pink stratus clouds are coming from the northeast at about 15 miles per hour (6.7 meters/ second) at an appoximate height of ten miles (16 kilometers) above the surface. The clouds consist of water ice condensed on reddish dust particles suspended in the atmosphere. Clouds on Mars are sometimes localized and can sometimes cover entire regions, but have not yet been observed to cover the entire planet. The image was taken by the Imager for Mars Pathfinder (IMP) on Sol 16 about forty minutes before sunrise showing areas of the eastern Martian horizon.
This is the first color image ever taken from the surface of Mars of an overcast sky. The image was taken about an hour and forty minutes before sunrise by the Imager for Mars Pathfinder (IMP) on Sol 16 at about ten degrees up from the eastern Martian horizon.
This animation shows three images taken on the morning of Sol 16. Between frames, you can see the clouds moving across the screen from the northeast. The clouds are thought to be about 10 miles high and moving in 15 mile per hour winds.
Frosty white water ice clouds and swirling orange dust storms above a vivid rusty landscape reveal Mars as a dynamic planet in this sharpest view ever obtained by an Earth-based telescope.
NASA's Earth-orbiting Hubble Space Telescope took the picture on June 26, 2001, when Mars was approximately 43 million miles (68 million km) from Earth -- the closest Mars has ever been to Earth since 1988. Hubble can see details as small as 10 miles (16 km) across. The colors have been carefully balanced to give a realistic view of Mars' hues as they might appear through a telescope.
The oval-looking Argyre impact basin (bottom), appears white due to clouds or frost....
...the cap has receded to a core of solid water-ice several hundred miles across....
...This picture was taken with Hubble's Wide Field Planetary Camera 2 in PC mode. Exposures were taken through three different color filters to create this true color image. The pictures were map-projected onto a sphere for accurate registration and perspective....
Yes, and you have known it for many months, from other threads.
Originally posted by zorgon
Ah! so we agree then that the skies on Mars are indeed BLUE... and that there are WATER VAPOR clouds on Mars...
Maybe, I didn't said that I agree with that. Show me the data that shows those kind of temperatures and we may talk about it.
We also agree that daytime summer temperatures can reach +81 degrees Fahrenheit ...
Maybe, I do not know about those 81 degrees (and why don't you people use Celsius like all civilised countries?)
Fluffy white water vapor clouds in a blue Martian sky with a balmy temperature of 81 degrees...
That is the part nobody (as far as I know) has seen, liquid water, and unless Mars is like those deserts where the flowers bloom and the toads come out from the ground when it rains (but in this case reduced to very small "leaks" that probably disappear in little time) I don't think Mars can have, on the surface, life as we know it.
Sounds like the kinda conditions favorable to life to me... maybe just ad a few drops of rain
Probably the same that you get paid by the Russian Mafia to dress as a fake king.
So ArMaP... how much did you say you are getting paid to debunk?
Originally posted by ArMaPYes, and you have known it for many months, from other threads.
Maybe, I didn't said that I agree with that. Show me the data that shows those kind of temperatures and we may talk about it.
Maybe, I do not know about those 81 degrees (and why don't you people use Celsius like all civilised countries?)
I don't think Mars can have, on the surface, life as we know it.
Probably the same that you get paid by the Russian Mafia to dress as a fake king.