Curiosity Finds 7 New Martian Organics in 3.5-Billion-Year-Old Rock, Including DNA Precursors
Updated
Updated · ecoportal.net · Jun 14
Curiosity Finds 7 New Martian Organics in 3.5-Billion-Year-Old Rock, Including DNA Precursors
3 articles · Updated · ecoportal.net · Jun 14
Summary
Seven previously unseen organic compounds on Mars turned up in a Curiosity rock sample from Gale Crater, alongside 21 carbon-containing molecules, including nitrogen heterocycles tied to RNA and DNA precursors.
Two remaining wet-chemistry cups enabled the detection after Curiosity's standard supplies ran low, forcing NASA to try a risky one-off analysis that ended one rover function.
The sample came from clay-bearing sandstone in Glen Torridon, where ancient lake mudstones and later water activity made the site a strong candidate for preserving fragile organics.
Benzothiophene, a sulfur-bearing molecule found in the rock, points scientists toward either past hydrothermal activity or a history of meteorite impacts on Mars.
The findings do not prove life, but they strengthen evidence that ancient Mars preserved complex chemistry and key ingredients associated with habitability.