Uracil and xanthine were identified.
~~Bolding by me.
My-my-my. Leaving out the hype, this is interesting indeed.
Uracil and xanthine were identified.
~~Bolding by me.
My-my-my. Leaving out the hype, this is interesting indeed.
More story links.
That is indeed interesting. Maybe our finding out about our neighbours doesn’t come in one fell starship swoop; it comes in little dribs and drabs like this.
We are all starstuff.
This also supports the idea that life on Earth was seeded by these chemicals falling from space. (A stronger form of that theory posits whole single-celled lifeforms hitching a ride here from who-knows-where, but we haven’t found any evidence of that to date.)
Maybe “The Andromeda Strain” is actually a documentary sent from the future. Sounds like poopen pants time.
…we are golden, …
… we’re gonna look so stupid to our children.
I already do. Can’t wait for them to get older, when I’ll look better.
Without even a glance at these links, it’s old news. Interesting, but not that interesting. Is this anything like the meteorite examined in Maryland? The one with achiral amino acids?
And when did carbon-13 become magic? “Only forms in space?”
I’m not saying this panspermia idea is impossible, but there’s still no good reason to think that the chemical processes that lead to lifeforms don’t occur a LOT faster and more efficiently in non-vaccuum environments. Say, Earth.
Isn’t it possible that the meteorite was orginally a bit of earth rock thrown into the outer atmosphere by, say volcanic activity?
The carbon was then exposed to increased gamma radiation formed the C13 isotope.
Then, after orbiting for a while, fell back to earth.
I’m probably wrong. I have no idea of the science.
IMO panspermia is a ludicrous idea. All it does is pass the buck on the origin of life. Worse yet, it puts it in a place where complex chemical reactions are even less likely due to low concentrations and a lack of solvent. On earth, you have massive soup of chemicals that are constantly mixing. Earth is the perfect environment for complex reactions. Finding extraterestrial nucleotides only demonstrates that these nucleotides are a natural energy minimum for compounds to rearrange to. It’s a nice find, but not unexpected.
Not that a rock would have to reach escape velocity (11.2 km/s) in order to orbit the earth (?), but I can’t imagine any earth volcano capable to accelerate even a low-mass rock fast enough to reach any kind of stable orbit. We’re talking several thousands of miles an hour at the least, aren’t we?
Perhaps ejecta from a larger meteor impact though. I think that is within reason.
How about the debris thrown up by a vast meteor impact?
While I agree that all it does is pass the buck, I wouldn’t call it a ludicrous idea. It’s entirely possible. We can’t rule it out, so it must be considered if we are looking into the matter of our origins. If it does turn out to be true, it means there’s a fantastic chance there’s life elsewhere. But, I doubt we’ll ever have enough conclusive evidence aside from circumstantial findings such as this.