News Fresh Today: Comets Smell Like Rotten Eggs, Horse Urine, Reveals Study

A new study has revealed that the smell of comets is quite strong, with the odor of rotten eggs (hydrogen sulphide), of horse stable (ammonia) and the pungent, suffocating odor of formaldehyde. The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis has been sniffing the fumes of the comet Churyumov-Gerasimenko with its two mass spectrometers. The smell is mixed with the faint, bitter, almond-like aroma of hydrogen cyanide and adding some whiff ...