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Are Those Spidery Black Things On Mars Dangerous?

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Re: Are Those Spidery Black Things On Mars Dangerous?

#63
post #55

Earlier quoted context omitted.

How would those plants have gotten onto the surface Mars?

How did they get here?

They evolved.

For plants to be on Mars, either A) the immeasurably chaotic process of evolution yielded carbon-based, cellular, stationary, metabolizing, photosynthetic, reproductive things on two planets with vastly different geological and climatic histories, or B) Earth-borne plant material, which has evolved to the point that it can only produce a viable organism in certain rather specific environmental niches on its home planet, has somehow reached a foreign planet and developed into a more-or-less thriving colony of vegetation upon it.

Neither of those seems terribly likely.

Re: Are Those Spidery Black Things On Mars Dangerous?

#65
post #38

A good image of the formations is on Wikipedia: http://upload.wikimedia.org/wikipedia/commons/0/0c/PIA11858_...

That looks so much like mold.

It really does. However, one should keep in mind that humans have overzealous pattern-matching engines. We are really good at erroneously seeing things that we recognize.

Re: Are Those Spidery Black Things On Mars Dangerous?

#66
post #38

A good image of the formations is on Wikipedia: http://upload.wikimedia.org/wikipedia/commons/0/0c/PIA11858_...

It seems like we'd be able to tell if they are geysers or something else by having a few frames of photos? A geyser would be moving in some way you'd think?

Re: Are Those Spidery Black Things On Mars Dangerous?

#69
post #51
post #30

The top comment here and on reddit is the same!! Either kaax is martian, or just a plagiarist. Here's the link: http://www.reddit.com/r/science/comments/10vrag/are_those_sp...

It is a spammer that takes HN comments and reposts them at Reddit. Someone should report that behaviour at http://www.reddit.com/r/reportthespammers

I checked that guy's profile, he's not a spammer, just a karma whore.

Re: Are Those Spidery Black Things On Mars Dangerous?

#70
post #65

Earlier quoted context omitted.

That looks so much like mold.

It really does. However, one should keep in mind that humans have overzealous pattern-matching engines. We are really good at erroneously seeing things that we recognize.

And when it comes to Martian geography, we are hopelessly bad at judging scale. It's very easy to be several orders of magnitude off without a guide or legend.
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