DescentBB

http://marsrovers.jpl.nasa.gov/gallery/ ... _p108.html

Go there and get last two pictures. Notice the thing at the bottom.

Your suggestions?


BTW, see a possible lake at http://themis.la.asu.edu/zoom-20040422a.html

If you adjust dark tones, you can see the low tide shore line.

Uh, I am sure this lake is full of worms!

The lake could have also been magma that flowed to the surface, then sunk back down (for whaterver reason).

Or an impact within an impact? Could have contributed to the above.

Or, it could be that the winds normally blow from the NW (given the current orientation of the image) and it created a ridge from that?

The swimming pool looking dark area is too dark to discern anything. Needs another shot in daylight. It sure woulnd't be liquid water, tho'.

Thing at the bottom?

ITS TEH ALIENZ!

Needs better light.

Testiculese: "The swimming pool looking dark area is too dark to discern anything. Needs another shot in daylight. It sure woulnd't be liquid water, tho'."

You can load the image to picture editor and increase brightness or gamma correction to see what I said resembling tide line

[quote="Sudanamaru"]

You can load the image to picture editor and increase brightness or gamma correction to see what I said resembling tide line[quote]

Mars' lack of a large moon makes me doubt that Mars has a tide...

(can lakes even have tides? I thought it was just oceans)

Topher wrote:
[quote="Sudanamaru"]
You can load the image to picture editor and increase brightness or gamma correction to see what I said resembling tide line[quote]

Mars' lack of a large moon makes me doubt that Mars has a tide...

(can lakes even have tides? I thought it was just oceans)

----

I meant simply level change by "tide", not a gravitational tide. Lake level can change by the input debis/evoparation rate change.

To support Sud, the tide line is equal distance around the lake, so it would be water table rise and fall, not moon tides anyway.

HOWEVER...

this water table is probably a thousand feet under the surface. Liquid water can't (well what we think today) exist on the surface of Mars.

All water/ice evaporation /sublimation calculations are based on ordinary water. For example cat urine does not evaporate completely, for months on room temperature. I mean a residual wet substance remain. I suspect the car antifreeze also considerably less evaporate than pure water, also salty water, with NaCl or other salts. See near surface temperature charts at http://qt.exploratorium.edu/photopost/s ... 501&page=6

It may possible a specific water solution may remain liquid at low temperature and dont evaporate fast.

For example saturated NaCl solution can remain liquid up to -21 degree Centigrade.

May some organic activities on Mars product some antifreeze material (as some artic fishes or pine trees does) and this extract spread on circulating water reservoirs, therefore keeping them available. Such a global activity can be compared how our planet obtained its Oxygen from plants.

Oh yeah? Well what do you guys think of THIS.

It's not a problem of evaporating. It's a problem all water would be frozen.

Am I the only one here that neither understands, nor cares about this onslaught of mars 'theories' (read "far fetched hypotheses") on this board?

If so... then meh.

And what am I looking at that's 'funny'? Looks like pictures of hardware to me.

And Mr. Spell Check is your friend.

Man - what can I say? I already told you to get off the crack. Did you switch to that LSD instead?

Your "lake" is a crater. The swelling in the middle is caused by molten rock rebounding and is a classic crater formation. Whether it once held water or not can not be discerned from photographs of the surface taken from on orbit.

Let's get this straight - water does not exist on the surface of Mars. Not now - and not for a couple of billion years.

The possibility of massive liquid water flows exists, but these events are (probably!) long gone and the water would have sublimed rapidly, or drained into the frozen ground very quickly.

For water to remain liquid on the surface for any period at all, it would have to be a super-saturated salt solution, and even THEN it will sublime rapidly. (i.e. months)

I'm prepared to accept salt beds on the surface: being the sublimed remains of super-saturated water, and I look forward to the discovery of salt beds on Mars, in the deepest portions of now-dry lakes and/or seas.

Your story about cat piss is apocryphal - name your source. It's false, plain and simple.

As to tides, yes, there WOULD be tides on Mars, if oceans existed, but they would be Solar and Jovian tides rather than Demos/Phobos induced tides. They would amount to a couple of centimetres at most.

I'm finding all this most amusing. I must say.

Worms you say? From whence do these worms come? On what do they feed? How are they protected from heavy radiation? Where does the energy for this ecosystem come from? What bio-chemical process enables it? Most amusing. Really. Yeah. Funny!

Sorry String Ray, late answering about the funny thing. A close-up:
http://dinomantis.com/woolyduck/2P13596 ... y_duck.jpg

Mobius, please read then NASA comments on this:

"This image is causing us considerable difficulty due to the presence of a structure that
resembles a lake located in the center of the crater. "

"causing us considerable difficulty" != "proof of life"

What they mean is the image is difficult to be absolutely sure of the interpretation of. Perhaps you, too, should be a bit less sure of your interpretation!

"Uh, I am sure this lake is full of worms! "

Lothar, as you see the smile at end, I said it jokingly. The "worm"
was the core of the joke.

I am sory if this upset you and others.

About the lake, I did said "possible"

Even it could be a lake, it could be a lake of not water, or pure water. For example some volcano craters have concentrated suphuric acid lake, where no specie can survive.

I can see this turning into a joke thread again, I really can...

Oh, and that worm joke was 'piss in a hat'. See a British slang dictionary for the meaning. Not funny at all.

/ventanger

Sudanamaru wrote:Sorry String Ray, late answering about the funny thing. A close-up:
http://dinomantis.com/woolyduck/2P13596 ... y_duck.jpg

It looks like a rock.