We have met the aliens, and they are us

National Geographic reports that DNA precursors were found in a 4.5-billion year old meteorite. When scientists dissolved parts of a  asteroid fragment, they found uracil and xanthine. You might remember uracil as the “U”  that pairs with the “A” in RNA (in DNA, “U” is replaced by “T”, thymine). Xanthine is produced when guanine (another RNA and DNA nucleic acid) degrades, and is a precursor to uric acid. So alien molecules may be not only in your cells, but IN YOUR PEE.

As Carl Sagan far more eloquently said:

We are star stuff which has taken its destiny into its own hands. The loom of time and space works the most astonishing transformations of matter.


One Response to We have met the aliens, and they are us

  1. Evgenia says:

    Good for you Abby. I’ve been ruminating about a saciol event for a month and I went today. Didn’t stay long but I made an appearance. There wasn’t anything that should have stressed me out besides that I JUST DON’T LIKE SOCIAL FUNCTIONS. No food issues with this one, but I just don’t feel comfortable.I’m glad you felt well with your accomplishment and enjoyed your observations. That is the best part of saciol events. Just watching people. That’s why I put myself behind the camera.

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