Scientists on Friday identified two complex organic molecules [yahoo.com], or building blocks of life, on a comet for the first time, shedding new light on the cosmic origins of planets like Earth.
Ethyl alcohol and a simple sugar known as glycolaldehyde were detected in Comet Lovejoy, said the study in the journal Science Advances.
"These complex organic molecules may be part of the rocky material from which planets are formed," said the study.
Other organic molecules have previously been discovered in comets, most recently in comet 67P/Churyumov-Gerasimenko, on which the European space agency's Philae found several organic molecules -- including four never detected before on a comet.