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I’m Convinced We Found Evidence of Life on Mars in the 1970s

blogs.scientificamerican.com

141–150 of 268 posts

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#141

Earlier quoted context omitted.

> they will freak out knowing that we are all doomed, including all our offspring Um, sorry to break it to you but the horse has left the barn in regards to future prospects.

Things may get pretty shitty for them, but if I could wager on such a thing, I'd wager on the species surviving.

who would you collect from if you wagered against, and how would you take it with you?

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#142
post #129

Earlier quoted context omitted.

> or a single "mother" creature How did the "mother" creature come to be? By what mechanism did its complexity emerge? There is no known or plausible mechanism by which complex life can arise without evolution, and technology which does not change its design is (very appropriately) by the definition above, not life.

> How did the "mother" creature come to be? It could be a human "mad scientist" creating hordes of Pikachus. Suppose the scientist has also attained biological immortality for himself, and the Pikachus have spread to multiple planets over thousands of years. You come upon such a colony planet, but you have no knowledge of their creator. They display no clues that hint at the scientist's role in their civilization (fo…

I assume by "spreading" you mean that the Pikachus can reproduce?

Can they mutate? If so, then they satisfy all four boxes and they count as life.

If the Pikachus are made of cells, they'll certainly mutate/vary, since their heritable material is DNA, which is quite fragile.

Really, it's hard to imagine having "reproduction" without "mutation" in the imperfect physical world where errors are possible— I can't imagine any copying process, even a technological one, which succeeds with perfect fidelity and 100% probability. So if you have #1, #3 is basically going to be a given, because the universe is imperfect.

I don't think "what material they're made of" matters much, except that by definition flesh has to be alive, since it's made of things (cells) that tick all four boxes.

If the Pikachus don't reproduce themselves, and/or are created with perfect fidelity every time, then yes, I would call them technology and not life. We certainly wouldn't say that iPads (Pikachus) coming from a factory ("mother creature") are alive.

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#143
But if the CLR comes back positive, doesn’t that still mean there’s room for “it could be some unknown nonbiological process”. Wouldn’t saying with certainty that there is life on mars need somerthing like a microscopic image of cells dividing?

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#144
post #86
post #85

Earlier quoted context omitted.

Which seems kinda silly to this layman because there are no shortage of potential robotic missions.

I don’t support the conspiracy theory, but the shortage isn’t potential robotic missions, it’s money for missions.

This assumes the amount of funding would remain the same. Would it? Hell, if they found life on Mars I'd consider switching jobs to work on that. I'd be surprised if tax-paying people wouldn't be open to funneling more tax-money towards space travel. Human- or robot missions, regardless.

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#145

Excuse the cliche question, but what is Life? If we make an AI whose thoughts and communication are practically indistinguishable from humans, and it controls a bunch of things that affect the physical world, is it alive? If there's a disembodied mind somewhere that can think and imagine but never communicate or interact with anything, is it dead? What about a human in a coma or permanent dreaming state? What about w…

Going from the 'swapping spit' hypothesis. We can just say it suffices for there to be cells that divide and grow and contain DNA or RNA

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#146
post #87

Earlier quoted context omitted.

In the "swapping spit" scenario, we the aliens and they are us. If genetic material did travel in either direction, it would be easily verified.

There is life on Mars -- JPL just doesn't want to tell us. Follow this logic: 1) two planets in habitable zone - both spontaneously cause life; 2) then many or most habitable zone planets have life; 3) Of the trillions of stars in our galaxy, there must be multitudes that have hosted intelligent life; 4) we don't hear SETI signals; 5) that means SETI must have snuffed themselves out with some super-technology; 6) erg…

I wonder if Type 3 civilizations might engulf their star in a Dyson Sphere to block out light and make it harder to find. A dark forest where the life-bearing trees aren’t even visible.

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#147
post #123

Earlier quoted context omitted.

There is life on Mars -- JPL just doesn't want to tell us. Follow this logic: 1) two planets in habitable zone - both spontaneously cause life; 2) then many or most habitable zone planets have life; 3) Of the trillions of stars in our galaxy, there must be multitudes that have hosted intelligent life; 4) we don't hear SETI signals; 5) that means SETI must have snuffed themselves out with some super-technology; 6) erg…

We already know we’re all doomed. The sun bakes us in somewhere around 5 billion years.

Earth will become inhabitable faster than that. The timeline at

https://en.wikipedia.org/wiki/Timeline_of_the_far_future

is thought provoking.

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#148
post #7

I often wonder why these are always auxiliary conversations. Ever since I was young, like most kids (I have 4), I also had this deep yearning for knowledge on life external to earth. Wonder why this never has gone mainstream.

It might be too mainstream. As in, anyone who believes in extra terrestrial life is probably an enthusiast. "Real scientists" are sceptical.

Thus many scientists try hard to dismiss evidence of alien life, because that is fashionable. Or at least, the alternative is very kitschy.

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#149

Earlier quoted context omitted.

This argument can be flipped, though. If life were found on Mars, that might lead to a ban on manned Mars missions, because there's absolutely no chance that a manned mission will not contaminate Mars with microbes from Earth. So to protect a Martian ecosystem, we might have to use only robots to explore Mars.

or rather to protect us from what is coming back; I remember that the Apollo astronauts were kept in quarantine due to that fear. I think it's sort of funny that the effort to make us a multi planetary species might as well doom us if we catch something unusual while on Mars.

[deleted]

Re: I’m Convinced We Found Evidence of Life on Mars in the 1970s

#150
post #87

Earlier quoted context omitted.

In the "swapping spit" scenario, we the aliens and they are us. If genetic material did travel in either direction, it would be easily verified.

There is life on Mars -- JPL just doesn't want to tell us. Follow this logic: 1) two planets in habitable zone - both spontaneously cause life; 2) then many or most habitable zone planets have life; 3) Of the trillions of stars in our galaxy, there must be multitudes that have hosted intelligent life; 4) we don't hear SETI signals; 5) that means SETI must have snuffed themselves out with some super-technology; 6) erg…

The biological plausible explanation is that there simply has not been enough time for other civilizations to form up. It took us 4 billion years to reach civilization from primordial goo. Apparently not many planets remain habitable that long. It does not matter if you have a trillion planets if they don't remain stable long enough.
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