Theoretical origin of life:all DNA bases found in meteorites (Introduction)

by David Turell @, Tuesday, April 26, 2022, 18:04 (732 days ago) @ David Turell

Recent find:

https://www.sciencenews.org/article/all-of-the-bases-in-dna-and-rna-have-now-been-found...

"Space rocks that fell to Earth within the last century contain the five bases that store information in DNA and RNA, scientists report April 26 in Nature Communications.

"These “nucleobases” — adenine, guanine, cytosine, thymine and uracil — combine with sugars and phosphates to make up the genetic code of all life on Earth. Whether these basic ingredients for life first came from space or instead formed in a warm soup of earthly chemistry is still not known (SN: 9/24/20). But the discovery adds to evidence that suggests life’s precursors originally came from space, the researchers say. (my bold)

"Scientists have detected bits of adenine, guanine and other organic compounds in meteorites since the 1960s (SN: 8/10/11, SN: 12/4/20). Researchers have also seen hints of uracil, but cytosine and thymine remained elusive, until now.

“'We’ve completed the set of all the bases found in DNA and RNA and life on Earth, and they’re present in meteorites,” says astrochemist Daniel Glavin of NASA’s Goddard Space Flight Center in Greenbelt, Md."

Comment: this is not panspermia, life from space. Life requires 20 essential amino acids. Not all of those have been found. The gap from finding bits of the code to forming an actual code of DNA is obviously enormous, but the writer must insert the hopeful statement I have in bold to stick to the narrative of natural chance, and never God.


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