WHAT DOES SPACE SMELL LIKE?
The final frontier smells a lot like a Nascar race--a bouquet of hot metal, diesel fumes and barbecue. The source? Dying stars, mostly.
The by-products of all this this rampart combustion are smelly compounds called polycyclic aromatic hydro-carbons. These molecules "seem to be all over the universe", says Louis Allamandola, the founder and director of the Astrophysics and Astrochemistry Lab at NASA Ames Research Center. "And they float around forever", appearing in comets, meteors, and space dust. These hydrocarbons have even been shortlisted for the basis of the earliest forms of life on earth. Not surprisingly, polycyclic aromatic hydrocarbons can be found in coal, oil and even food.
Though a pure unadulterated whiff of outer space is impossible for humans (its a vacumn after all; we would die if we tried), when astronauts are outside the ISS, space born compounds adhere to their suites and hitch a ride back into the station. Astronauts have reported smelling "burned" or "fried" steak after a space walk, and they aren't just dreaming of a home cooked meal.
The smell of space is so distinct that, three years ago, NASA reached out to Steven Pearce of the fragrance maker Omega Ingredients to re-create the odor for for its training simulations. "Recent we did the smell of the moon," Pearce says. "Astronauts compare it to spent gunpowder."
Allamandola explains that our solar system is particularly pungent because it is rich in carbon and low in oxygen, and "just like a car, if you starve it of oxygen you start to see black soot and get a foul smell." Oxygen-rich stars, however, have aromas reminiscent of a charcoal grill.
Once you leave our galaxy, the smells can get really interesting. In dark pockets of the universe, molecular clouds full of tiny dust particles host a veritable smorgasbord of odors, from wafts of sweet sugar to the rotten-egg stench of sulfur.
LIZZIE SCHIFFMAN
From Popular Science 2/2011
The by-products of all this this rampart combustion are smelly compounds called polycyclic aromatic hydro-carbons. These molecules "seem to be all over the universe", says Louis Allamandola, the founder and director of the Astrophysics and Astrochemistry Lab at NASA Ames Research Center. "And they float around forever", appearing in comets, meteors, and space dust. These hydrocarbons have even been shortlisted for the basis of the earliest forms of life on earth. Not surprisingly, polycyclic aromatic hydrocarbons can be found in coal, oil and even food.
Though a pure unadulterated whiff of outer space is impossible for humans (its a vacumn after all; we would die if we tried), when astronauts are outside the ISS, space born compounds adhere to their suites and hitch a ride back into the station. Astronauts have reported smelling "burned" or "fried" steak after a space walk, and they aren't just dreaming of a home cooked meal.
The smell of space is so distinct that, three years ago, NASA reached out to Steven Pearce of the fragrance maker Omega Ingredients to re-create the odor for for its training simulations. "Recent we did the smell of the moon," Pearce says. "Astronauts compare it to spent gunpowder."
Allamandola explains that our solar system is particularly pungent because it is rich in carbon and low in oxygen, and "just like a car, if you starve it of oxygen you start to see black soot and get a foul smell." Oxygen-rich stars, however, have aromas reminiscent of a charcoal grill.
Once you leave our galaxy, the smells can get really interesting. In dark pockets of the universe, molecular clouds full of tiny dust particles host a veritable smorgasbord of odors, from wafts of sweet sugar to the rotten-egg stench of sulfur.
LIZZIE SCHIFFMAN
From Popular Science 2/2011
