Study suggests asteroids or Earth itself more likely sources of life's building blocks
3 Oct 28 · 11d ago · 3 posts · 1 source · development 3 of 3
The researchers propose that asteroids, which struck Earth far more frequently than comets, may have triggered the chemical reactions needed to create prebiotic molecules. Alternatively, life's ingredients may have formed on Earth without external help. The study found comet delivery was slightly more probable for Mars due to its thinner atmosphere.
“Most comets would have been traveling too fast and at too steep an angle to Earth for prebiotic compounds to survive impact with the planet, researchers contend October 28 in Scientific Reports.”
Scientific Reports, Journal · mastodon ↗Richard Anslow Lead author, Cambridge astronomerUniversity of Cambridge research team Study authors
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What was reported 5 claims about this development
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first by University of Cambridge, 10d ago · also Inshorts, theprint, Iosco County News Herald, Leader Publications, The Moore County News-Press, Community Newspaper Group +5
6 more headlines
- Comets didn't seed life on Earth after all, study suggests | The study was published in 'Scientific Reports' | Inshorts Inshorts · 9d ago
- Did comets bring life to Earth? It is a ‘romantic idea’, but highly unlikely theprint · 9d ago
- Did life on Earth hitch a ride on a comet? Study may have answer Iosco County News Herald · 9d ago
- Did comets help start life on Earth? A new study questions the idea and scientists are baffled The Economic Times · 8d ago
- Comets probably didn’t seed life on Earth, and Mars was a better target Martin Cid Magazine · 8d ago
- Did comets seed life on Earth? A new study says EarthSky · 8d ago
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4 outlets Comet impacts may not have delivered life’s building blocks to early Earth, simulations suggest
first by Mezha.net, 11d ago · also Labroots, Science News, IFLScience
3 more headlines
- Comets unlikely to have brought life's seeds to Earth Labroots · 11d ago
- Comets probably didn’t deliver life’s building blocks to Earth Science News · 11d ago
- Comets Are Unlikely To Have Seeded Earth With The Building Blocks Of Life IFLScience · 11d ago
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first by Gizmodo, 10d ago · also CNN, heise online
2 more headlines
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first by Mashable, 11d ago · also Yahoo, Mashable SEA
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first by Universe Space Tech, 10d ago · also Magzter
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What people said 24 voices · verbatim
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The speed and angle of impact would have destroyed most organic compounds from comets https://www. sciencenews.org/article/comet- chemistry-life-earth-speed-sharp # science # life # biology # chemistry
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There is widespread agreement that all yoi need for life to spontaneously erupt is an oxygen reduced environment and a good mix of atoms and a somewhat warm temperature. There are 2 points in cosmic history this could have most plausibly happened for Earth based life. 1 is the primordial Earth itself as you described. The other, which has recently…
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Computer Simulations Suggest Building Blocks of Life Didn't Arrive on Prehistoric Comets (cnn.com) Link: https:// science.slashdot.org/story/26/ 10/31/2142240/computer-simulations-suggest-building-blocks-of-life-didnt-arrive-on-prehistoric-comets
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Are they suggesting that intelligence on the scale of humans is the rare thing and life is everywhere? It is absolutely possible. Earth's life spent a huuuge chunk of its existence as single-celled organisms, and even multicellular life took a long time until apes came up who started to use fire and melt metals. And we may be well on our way to…
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# CNN # News New study casts doubt on theory about the role comets played in kick-starting life on Earth
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Wasn't the theory regarding comets that one landed during the right conditions on earth and a few dozen early microbes started reproducing in a puddle that was mostly shielded from direct UV? It's possible that every rocky planet with abundant water in the right teasing orbit around their star has life but then where are all the radio signals from…
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there’s a reason we are experiencing life here in the sol system on earth instead of say the Orion system on their second planet if they have one. It’s because the conditions and circumstances are just right to allow life to thrive to allow life to ponder why here and not there. So yes odds are small but we expect them to occur in the universe and…
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Yeah, the first signs of life are about as old as the first signs of liquid water, around 4 billion years ago. Multicellular animals didn't come around until about 600 million years ago. The first hominids showed up single-digit millions of years ago. Agriculture is about 10 thousand years old, large scale industry a couple hundred years old. The…
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And once again, Sir Fred (RIP) misses the mark. First with “Steady State” and then with “panspermia” (an unfortunate name, not as catchy as “The Big Bang”). My physicist step-father had Sir Fred over for dinner once when I was in my early 20s, during which he waxed eloquent on the theory. I mean, there’s a good deal of plausibility about it…
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It's addressed in the article. So where did the molecular seeds of life on Earth come from? The researchers say there are several possibilities, including the synthesis of these molecules following the impact of asteroids, which hit the Earth far more frequently than comets. Or the chemical precursors formed from processes that occurred on Earth…
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There wasn't a "good mix of atoms" shortly after the big bang. Several generations of stars fusing elements together were necessary before there was any significant atomic diversity. The idea that life started in one place after the big bang and spread from there across the universe is much less likely than there being ideal environments for…
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The elements needed for cellular life aren’t rare, but the other building blocks might be. A planet having an active core to facilitate tectonic plates as an example, or the just to multicellular life as another one.
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I really don't need this to become another "eggs are bad for you/eggs are good for you" argument where there's no clear decisive winner and I'm just trying to eat breakfast over here.
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Yeah 1 in a million is huge astronomically, I feel. 100+ billion stars per galaxy, 1+ trillion galaxies in just the observable universe alone? That’s an insane number of star systems.
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Wait, what? People still thought we needed a "seed" from space in 2026? I thought we already realized everything life needed could be established on Earth.
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Here of course, or maybe somewhere else in the Solar System. Which means that life is probably very common throughout the Universe, if that's the case.
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No, Hydrogen and Helium make up like 98% of all matter in the universe Carbon is probably in the top 10, but is pretty rare, relatively speaking
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There are between 100 and 400 billion stars in the Milky Way alone. One in a million would be 100,000-400,000 times in just our galaxy.
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Doesnt the on in a million thing rather support the theory, and explain why there arnt more populated planets that we've found?
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True but weve hardly looked anywhere. We took a shot glass of ocean water and said "see, where's all the fish?"
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I mean even if Earth was seeded by life on a comet, that life still had to originate from somewhere, somehow
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Water cycle. The presence of water makes the rock less rigid and essentially acts as a lubricant.
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Earth being habitable in the first place already seems like a one in a million occurrence
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one in a million seems like pretty good odds when talking about the entire universe...
All 3 developments of Cambridge study: comets likely didn't seed life on Earth →
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