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Perseverance might confirm past life on Mars for us. Well, it might pull up the samples that a future mission might use to determine if life once lived on Mars.
by interestica 6y ago
Perseverance might confirm past life on Mars for us.
Well, it might pull up the samples that a future mission might use to determine if life once lived on Mars.
But we are getting closer.
- inter_netuser 6y agoLet's hope we don't encounter life on Mars, one pandemic per lifetime will suffice, thank you.
- doggodaddo78 6y agoYou're conflating life as hosts and parasites. Most parasites require co-evolution with hosts. In the case of pandemic viruses, none existing anywhere else in the universe have the slightest chance of infecting us because there is absolutely nothing evolved exactly like us anywhere else.
- castratikron 6y agoOr a Martian microbe might just eat through any Earthly thing unable to fight back. Gray goo
- inter_netuser 6y agoAstronauts are routinely quarantined: https://en.wikipedia.org/wiki/Mobile_quarantine_facility https://en.wikipedia.org/wiki/Mobile_quarantine_facility
- ouid 6y agoYou realize that the apollo missions were done like 50 years ago, right?
- inter_netuser 6y agoYou are absolutely correct that we have not returned to the Moon in 50 years. They were quarantined in case they bring back some unknown pathogens we don't know what do with.
- tshaddox 6y agoThere are plenty of things that didn’t evolve to harm us but which can nonetheless harm us. Meteors are an obvious macroscopic example, while toxic chemicals are an obvious microscopic example.
- neuronic 6y agoI understand that the boundaries are blurry but this particular comment was talking about life harming other life.
- tshaddox 6y agoRight, and my point is simply that if inorganic chemistry is more than capable of harming life, it’s a bit strange to assume that organic chemistry and life would somehow have less capability to do so.
- BurningFrog 6y agoI think it's pretty likely there is bacterial life under the surface of Mars. 1 km down should be both warm and moist enough.
- Someone 6y agoDo you really mean today bacterial, and not microscopic or something like it? Bacterial implies a common ancestry with bacteria on earth. That, IMO, is less likely than finding very small life forms that are dissimilar from anything on earth.
- BurningFrog 6y agoYeah, I like the idea that bacterial life spread between the planets. We have found Mars fragments on Earth. Some almost almost certainly went the other direction.
- medstrom 6y agoYou like the idea, that's fine, but if I were to make a bet on PredictionBook... .0001%. Fragments don't just lift out of a fully formed planet without a collision with another massive body. I assume the Martian fragments you mention are from the early solar system when things were still being formed. Also if something like the Chicxulub impact was enough to lift fragments out of Earth, I assume such fragments would have gotten so hot that any microbes on it just died, to say nothing of the trip in the void of space to Mars which would likely take millions of years before finally crossing paths with it. Good luck surviving the solar radiation and lack of atmosphere in the interim...
- BurningFrog 6y agoI agree that it's a very unlikely individual event. But it only needs to happen once, with one bacteria surviving the trip over the billions of years when both planets were hospitable to life. I'd be hesitant to bet against those odds. I'm also not betting for it. Just being open to the possibility.