US EditionCuriosity Rover Detects 'Origin-of-Life' Molecules on Mars
The rover found preserved complex organics, including a nitrogen-bearing molecule similar to DNA precursors, but scientists say the results do not prove past life.
- On Tuesday, NASA's Curiosity rover identified over 20 organic molecules in clay-rich Martian sandstones within the Gale crater, according to a study led by astrobiologist Amy Williams of the University of Florida published in Nature Communications.
- Researchers performed a novel chemical experiment using tetramethylammonium hydroxide to break down complex organic matter, a technique never before attempted on another planet. The rover only carried two cups of this chemical, requiring careful site selection.
- Among detected compounds was a nitrogen-containing molecule resembling proto-DNA, alongside benzothiophene, a sulfurous chemical often delivered by meteorites. The findings confirm that complex macromolecular carbon remains preserved in Mars's subsurface despite harsh radiation.
- Although the findings indicate Mars was a habitable world, Williams cautioned, "We cannot yet say that Mars ever harbored life." Early in its history, the planet was warmer and wetter than today.
- The validated TMAH technique will serve as a "trailblazer for upcoming planetary missions," Williams said. Versions are destined for the European Space Agency's Rosalind Franklin rover at Mars's Oxia Planum and the Dragonfly rotorcraft mission to Saturn's moon Titan.
65 Articles
65 Articles
The Mars rover Curiosity has found new organic molecules on Mars that resemble precursors to DNA, the American space agency NASA reports. "It is not proof that life ever existed, but it confirms once again that Mars once had the right chemical composition to support life," they stated.
The Mars Rover "Curiosity" for the first time discovers an organic molecule similar to a precursor of DNA. The chemical could be an indication of earlier life on the red planet. The rover finds it where an earlier lake is suspected.
Scientists continue to try to determine whether the Red Planet has ever hosted life. NASA's Curiosity rover has now discovered a diverse mix of organic molecules on Mars, including chemicals thought to be the building blocks of life on Earth. The discovery marks the first time a new type of chemistry experiment has been conducted on a planet other than Earth.
Coverage Details
Bias Distribution
- 46% of the sources are Center
Factuality
To view factuality data please Upgrade to Premium
