Starship Asterisk*

http://www.space.com/php/multimedia/ima ... MSSS%20%20

The image on the right appears to be an active field of CO2 geysers near the martian southern pole, you can see the ejecta material around the activity as well as the geysers and their associated shadows pointing (NW?)?

the story came from here
http://www.space.com/scienceastronomy/0 ... ecaps.html

http://mpfwww.jpl.nasa.gov/odyssey/index.html

Another story

Hello BMAONE

Thank you for the link.

This is fantastic.

I wander if we have similar images on the moons of Jupiter, Saturn and so on.

Here is what I posted quite some time back on my site about geysers on Mars. I have about five pages on them with color and 3D images. This is one geyser field above Endurance Crater.

http://xenotechresearch.com/imo114.htm

In particular look at the lower left and lower right images, and you can see what appears to be mud in the images. It defintely is not desiccated sand.

These two images are pretty clear:

http://xenotechresearch.com/o114clr5.jpg
http://xenotechresearch.com/o114clrc.jpg

And here is another perfect geyser vent from Sol 122:

http://xenotechresearch.com/geyop122.htm

So the "geysers on Mars" people are really a couple of years behind the curve here.

http://xenotechresearch.com/geyop122.htm

In this one it does seem apparent that the "Blueberries" were pushed away from the "Crack" as if by force.

Indeed they were. I have many more such images as well, showing th effects of the ejection and pooling of a fluid medium, which clearly cannot be liquid carbon dioxide.

Note that these features must be relatively new, since the rate of erosion on Mars is pretty respectable. A two week period shows very significant movement and reshaping of the soil.

Hello Aichip

Nice links Sir mate. It does prove that water erosion still occurs.

Sorry that I have not had the time to see the previous links

I do not know how I missed them.

Is there a line or group of words missing between the links "Mars" and "carbon dioxide"? I can't quite make out the sense.

It doesn't look like a safe place to be driving my Land Rover.

today's APOD
http://antwrp.gsfc.nasa.gov/apod/ap060823.html

That is what happened to Mars Polar lander, an unfortunate coincidence.

What happend?

the bloody geiser went off at the exact moment MPL was hovering above.

Oh I see -your speculating that may have happend--I get it now (man I need some more coffee).

Did you notice the big flaw in the artist's rendition of Martian sand geysers? (It's a great test of, "What's wrong with this picture?")

Answer: The shadows on the gas jets are oriented as if the sun were in front of the Martian horizon! Of course, in reality the rays from the Sun are nearly parallel by the time they hit anywhere on the surface of Mars.

Oh, duh!

It's as if the artist thought, "Now how can I put realistic shadows here? Let me just put this lightbulb next to these upright pineapples..."

When you say "parallel", you mean the shadows are parallel to each other, of course. Painters used to learn this in art school in our great-grandfathers' time.

Shadows cast by the Sun on the horizon should converge towards the vanishing point, should they not? I'm not really seeing anything wrong in the image myself...

Here's a good example: Crepuscular rays. Every 'beam' of light and shadow in this image is parallel, but they certainly don't look it...

How many threads do we have on the sand geysers? I do like the geysers though. Whether the artist's rendering is aesthetically correct or not.
Orin

Oops! Qev is absolutely correct. If we got into a Martian helicopter and observed the scene from directly overhead, those shadows would be parallel. But from the painting's angle, close to the surface, the shadows would indeed appear to radiate from the sun, just like in the photo Qev linked.

I stand corrected.

http://antwrp.gsfc.nasa.gov/apod/ap060823.html
Maybe if your land rover had a top?
Orin