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Meteorite cargo could solve origin-of-life riddle

作者:姚换肩    发布时间:2019-03-07 06:04:00    

A CHEMICAL vital for life on Earth may have arrived ready-made from space. Unexpectedly, a chondritic meteorite has been found to contain large amounts of ammonia, a nitrogen-rich chemical vital for forming the basic building blocks of life. Explaining how enough ammonia for life appeared on the early Earth has been a puzzle, because sunlight rapidly destroys ammonia gas in the atmosphere. Now, Sandra Pizzarello of Arizona State University in Tempe and her colleagues report finding abundant ammonia after boiling powder from a meteorite in water and exposing it to high pressures,

 

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