Earlier quoted context omitted.
How does earth get seeded?
Look up ALH-84001. The debate about whether the structures inside this Martian meteorite are fossils is too long for a HN post. But in analyzing the rock it was shown that the during the entire trip from when it was blasted out of Mars to when it fell in Antarctica would have been survivable for rock boring microbes. Not just theoretically, but hard evidence. There are structures that would have been destroyed if the…
New findings point to an Earth-like environment on ancient Mars
131–140 of 329 posts
Re: New findings point to an Earth-like environment on ancient Mars
#132Link 404's out now..
Re: New findings point to an Earth-like environment on ancient Mars
#133Earlier quoted context omitted.
There are much saner theories for panspermia.
Like? You're coming across as very dismissive for no reason.
There are meteorites on Earth which very likely originated from Mars. They're believed to have been launched into space by an impact, eventually finding their way onto Earth. If we're looking for the most realistic options for panspermia to have occurred, they'd be due to a natural event of this sort.
Re: New findings point to an Earth-like environment on ancient Mars
#134yay, likelihood that we are martians just went up a few basis points
> yay, likelihood that we are martians just went up a few basis points I bet there's some non-life explanation, probably having to do with weird chemistry that happens on Mars over long periods, but is not so significant on Earth. The article says the Earth-chemistry that creates these minerals involves the oxygen in the atmosphere, but it doesn't seem plausible to me that Mars's atmosphere was ever oxygenated. It to…
Someone else brought up that superoxygenator salts form in the upper layers of the soil due to the high UV radiation on the surface. It's possible the oxidation here is due to those superoxygenators but the original manganese is due to the ancient lake. So basically manganese is embedded in the rock while there's a lake, then the lake dries up as the atmosphere disappears. And finally the UV gets strong enough to create oxidizers in the soil which react with the manganese.
Re: New findings point to an Earth-like environment on ancient Mars
#135So we messed up Mars, almost done with Earth, where do we go next?
"Messed up Mars" = Rendered into a dry wasteland where maybe there might be fossils of microscopic life
"Messed up Earth" = Making it very uncomfortable for Humans, causing large losses of life in poorer parts of the world, causing mass extinctions, but otherwise life will go on
Comparing the two is peak climate alarmism
Re: New findings point to an Earth-like environment on ancient Mars
#136Earlier quoted context omitted.
> I'm not familiar with the extent of his crimes, if any. He was the Nazis' best rocket engineer, responsible for, among other things, the V2s that devastated much of London. By the standards of the Nuremberg trials, he probably should have been tried and convicted. But he was never even accused, because the US wanted his rocket expertise--by the time of the Nuremberg trials, he was already working for the US Army.
Genuine question - unless he was directly involved with the genocide, was he not doing the exact same thing the allies were doing? It’s not a war crime to participate in a war for your country. The US bombed German civilians and Japanese civilians in mass numbers.
> The US bombed German civilians and Japanese civilians in mass numbers.
Yes, agreed. I'm not arguing that the standards of Nuremberg were actually the right ones.
Re: New findings point to an Earth-like environment on ancient Mars
#137Maybe we are about to discover that we came to Earth after messing up Mars.
Is that the paradise? And Adam's apple might not be an apple, but some important electronic devices that Adam accidentally broke? OK I know it sounds crazy...but it's fun to link legends with science.
Sounds like Assassin's Creed lore
Re: New findings point to an Earth-like environment on ancient Mars
#138Earlier quoted context omitted.
But then how did life get on mars?
I remember seeing somewhere a graph where someone plotted the "complexity" of life vs. time, I think on a log plot, and found a straight line. The line goes to (log) 0 around 5 billion years before the formation of the solar system. The inference from this admittedly dubious exercise was that life originated somewhere before our Solar system, spread here, and continued to evolve here. I think it was maybe from this s…
What definition of "complexity" lets it be linear across the Cambrian Explosion?
Re: New findings point to an Earth-like environment on ancient Mars
#139Earlier quoted context omitted.
I remember seeing somewhere a graph where someone plotted the "complexity" of life vs. time, I think on a log plot, and found a straight line. The line goes to (log) 0 around 5 billion years before the formation of the solar system. The inference from this admittedly dubious exercise was that life originated somewhere before our Solar system, spread here, and continued to evolve here. I think it was maybe from this s…
What definition of "complexity" lets it be linear across the Cambrian Explosion?
Size of genome, I think. Not clear how they estimate that for deep time.
Re: New findings point to an Earth-like environment on ancient Mars
#140Of course it had an Earth-like environment. Hasn't anyone ever read Edgar Rice Burroughs?