Wall Street Journal
By Gautam Naik
The probe that landed on the surface of a comet has discovered organic molecules, the most rudimentary building blocks of life, according to the German agency involved in the mission.
Scientists are analyzing the data to see whether the organic compounds detected by Philae are simple ones—such as methane and methanol—or a more complex species such as amino acids, the building blocks for proteins. A drill on Philae also obtained some material from the comet’s hard surface, but data about organic molecules from that experiment have yet to be fully analyzed.
Comets contain some of the most pristine materials in the solar system, dating to about 4.5 billion years ago. Previous studies have suggested that comets forge organic material in their dusty atmospheres.
Read more: http://online.wsj.com/articles/rosetta-probe-directly-discovers-organic-molecules-on-comet-1416256078