Posted on Dec 23, 2025
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from Space Daily
" For decades, scientists have predicted that early asteroids may have delivered the ingredients of life to Earth, and these findings seemed like promising evidence.
Even more surprising, these amino acids from Bennu were split almost evenly between "left-handed" and "right-handed" forms. Amino acids come in two mirror-image configurations, just like our left and right hands, called chiral forms.
On Earth, almost all biology requires the left-handed versions. If scientists had found a strong left-handed excess in Bennu, it would have suggested that life's molecular asymmetry might have been inherited directly from space. Instead, the near-equal mixture points to a different story: Life's left-handed preference likely emerged later, through processes on Earth, rather than being pre-imprinted in the material delivered by asteroids.
If space rocks can carry familiar ingredients but not the chemical "signature" that life leaves behind, then identifying the true signs of biology becomes extremely complicated."
" For decades, scientists have predicted that early asteroids may have delivered the ingredients of life to Earth, and these findings seemed like promising evidence.
Even more surprising, these amino acids from Bennu were split almost evenly between "left-handed" and "right-handed" forms. Amino acids come in two mirror-image configurations, just like our left and right hands, called chiral forms.
On Earth, almost all biology requires the left-handed versions. If scientists had found a strong left-handed excess in Bennu, it would have suggested that life's molecular asymmetry might have been inherited directly from space. Instead, the near-equal mixture points to a different story: Life's left-handed preference likely emerged later, through processes on Earth, rather than being pre-imprinted in the material delivered by asteroids.
If space rocks can carry familiar ingredients but not the chemical "signature" that life leaves behind, then identifying the true signs of biology becomes extremely complicated."
Can scientists detect life without knowing what it looks like
Posted from spacedaily.comPosted in these groups: Molecular Biology
Space
Space
Posted 28 d ago
Responses: 2
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SGT Mary G.
Well, LTC Trent Klug . . . that's sort of a bingo, lol. The right handed ones have been feared in that past, until some were found to be naturally occurring on earth. I read scientific articles in the past that suggested the ambidextrous molecules spinning in the other direction from earth which was thought to be entirely left-spinning. It was a huge issue! Apparently, the fear was the helicity of matter with right-handed spin might be fatal to all with left-handed spin/helicity!
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SGT Mary G. I just shared this to two people who are very left brained people and printed a copy. I am truly amazed with this because of suggestions that human life as we are, were the product of alien DNA. Of course, for me, I am a true Bible Believer in Creation. But I know the Bible has proven Science and Science has proven the Bible. This is an excellent share. I don't know how to assess a badge. I hope someone seeing this post is able to assess a badge to it.
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SGT Mary G.
PO3 Phyllis Maynard It is certainly interesting to consider. I guess the Osiris research suggests the alien life might have arrived via earth impacters, though not DNA.
It is interesting how looking deeper into something different than what we believe can contribute to verifying what we believe.
I too am fascinated with how the religious texts of most religions dovetail in some way or another with historic accounts within cultures, including those carved in stone as words and/or pictographs, archaeology, and what geology reveals about earlier earth processes in time and place. One of the branches of geology takes into consideration that ancient myths of cultures are expressed with terminology that can be interpreted in ways that lead to finding geological evidence of what was observed by folks in ancient times.
For example there was an ancient alcove of rocks found in New Mexico that a woman thought must have some meaning which was not being understood. After years of research it interdisciplinary research (wrote about it and publishes it too). It became clear that the sun beamed through a small opening every solstice to be seen within the alcove. . . evidence, along with tribal history, that the tribes in this area were keeping track of cyclical astronomical movement. And another of the tribes sacred sites was discovered and understood. (They also have many myths about star peoples . . . )
It is interesting how looking deeper into something different than what we believe can contribute to verifying what we believe.
I too am fascinated with how the religious texts of most religions dovetail in some way or another with historic accounts within cultures, including those carved in stone as words and/or pictographs, archaeology, and what geology reveals about earlier earth processes in time and place. One of the branches of geology takes into consideration that ancient myths of cultures are expressed with terminology that can be interpreted in ways that lead to finding geological evidence of what was observed by folks in ancient times.
For example there was an ancient alcove of rocks found in New Mexico that a woman thought must have some meaning which was not being understood. After years of research it interdisciplinary research (wrote about it and publishes it too). It became clear that the sun beamed through a small opening every solstice to be seen within the alcove. . . evidence, along with tribal history, that the tribes in this area were keeping track of cyclical astronomical movement. And another of the tribes sacred sites was discovered and understood. (They also have many myths about star peoples . . . )
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PO3 Phyllis Maynard
SGT Mary G. I love these discussions when people are not freaking out over other possibilities, but just sharing information.
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