his is an artist's concept of excess left-hand aspartic acid created in asteroids and delivered to Earth via meteorite impacts. The line at the bottom is a chromatogram showing that left-hand aspartic acid (tall peak in the center, with diagram of left-hand aspartic acid molecule on top) was four times more abundant in the meteorite sample than right-hand aspartic acid (smaller peak to the left, with right-handed aspartic acid molecule on top). Credit: NASA/Hrybyk-Keith, Mary P.
Originally uploaded in Nanotechnology in STEM.
Image 187167 is a 449 by 800 pixel JPEG
Uploaded: Jun15 18