- News Home
24 April 2014 11:45 am ,
Vol. 344 ,
Major climate data sets have underestimated the rate of global warming in the last 15 years owing largely to poor data...
The tsetse fly is best known as the vector for the trypanosome parasites that cause sleeping sickness and a disease in...
The National Institutes of Health is revising its "two strikes" rule, which allowed researchers only one chance to...
By stabilizing the components of retromers, molecular complexes that act like recycling bins in cells, a recently...
Fossil fuels power modern society by generating heat, but much of that heat is wasted. Semiconductor devices called...
Researchers are gaining insights into what made Supertyphoon Haiyan so powerful and devastating through post-storm...
Millions around the world got a first-hand look at what it was like to be in Tacloban while it was pummeled by...
- 24 April 2014 11:45 am , Vol. 344 , #6182
- About Us
ScienceShot: Building Blocks of Life in Titan's Atmosphere?
7 October 2010 4:26 pm
It's unlikely that the process produced Titanians, but experiments simulating the chemistry of the dense air on Saturn's biggest moon have yielded some of the basic buildings blocks of life. Today at the American Astronomical Society's Division for Planetary Sciences meeting in Pasadena, California, researchers described how they used radio-frequency radiation—a more convenient substitute for ultraviolet sunlight—to turn methane, nitrogen, and carbon monoxide (the main constituents of Titan's atmosphere) into glycine and alanine, the two smallest amino acids. The experiments also produced cytosine, adenine, thymine, and guanine, the four most basic components of DNA. And they created uracil, a precursor of RNA. The researchers said that because they achieved the reactions without the presence of liquid water, it's possible life could have sprung forth on Earth not in the seas, as commonly assumed, but perhaps in the planet's early atmosphere—a considerably thinner version of the fog enveloping Titan today.
See more ScienceShots.