NASA Recreates Odor of Saturn’s Moon Titan

By Carl Engelking | June 17, 2014 12:58 pm
Titan's atmosphere makes Saturn's largest moon look like a fuzzy orange ball in this natural-color view from the Cassini spacecraft. Cassini captured this image in 2012. Image Credit: NASA/JPL-Caltech/Space Science Institute

Titan seen in natural color from the Cassini spacecraft in 2012. Image Credit: NASA/JPL-Caltech/Space Science Institute

When it comes to catching a whiff of extraterrestrial scents, the closest we’ve come is the Apollo astronauts’ account of our moon’s burnt gunpowder aroma. But now, NASA scientists have recreated interplanetary smells right here on Earth, starting with Saturn’s moon Titan.

Using spectrometry data collected from the Cassini spacecraft, scientists mixed and matched various gases and hydrocarbons in the lab until they found a recipe that matched the unique spectral signature of Titan’s smoggy atmosphere. In the process, they classified a previously unidentified material discovered by Cassini in Titan’s brownish-orange haze.

As it turns out, Titan smells a bit like gasoline.

Seeing is Smelling

Cassini’s Composite Infrared Spectrometer measures infrared energy from Saturn and its moons to get readings on their thermal structure and composition. Researchers therefore set out to blend the perfume of Titan by combining the gases that make up Titan’s spectral signature.

They started with the two most abundant gases in Titan’s atmosphere: nitrogen and methane. Remember, methane is one of the primary gases expelled when we pass wind. However, these two gases weren’t enough to match Titan’s unique signature. They needed another magic ingredient.

An Aromatic Addition

Scientists then added a third gas: benzene, which is in a subfamily of hydrocarbons called aromatics. Benzene, a natural component of gasoline, is yellowish, highly flammable and has a sweet aroma.

After trying out a few other options — all aromatics — scientists alighted on a nearly perfect Titan recipe. They came especially close when they added an aromatic containing nitrogen. Although Cassini had detected the presence of other gases in Titan’s atmosphere, it wasn’t until now that scientists were able to identify those gases as aromatics. 

“This is the closest anyone has come, to our knowledge, to recreating with lab experiments this particular feature seen in the Cassini data,” lead author Joshua Sebree said in a statement.

Eau de Titan, then, smells a bit like a Citgo station. Just like Michelin three-star chefs, scientists say they will continue to refine their Titan recipe until they’ve truly perfected it.

In lab experiments NASA scientists matched the spectral signature of an unknown material the Cassini spacecraft detected in Titan's atmosphere at far-infrared wavelengths. The material contains aromatic hydrocarbons that include nitrogen, a subgroup called polycyclic aromatic nitrogen heterocycles. Image Credit: NASA/Goddard/JPL

In lab experiments NASA scientists matched the spectral signature of an unknown material the Cassini spacecraft detected in Titan’s atmosphere at far-infrared wavelengths. The material contains aromatic hydrocarbons that include nitrogen, a subgroup called polycyclic aromatic nitrogen heterocycles.
Image (Credit: NASA/Goddard/JPL)

 

CATEGORIZED UNDER: Space & Physics, top posts
  • SixSixSix

    Pray tell how does an astronaut in an air tight suit “smell” the moon? Perhaps they meant the dust that dropped off inside the lunar lander. None the less, it is a strange claim.

  • http://blogs.discovermagazine.com Fred Weems

    I pose this question in humble ignorance, so I deserve whatever names will be flung in my direction.
    Does the low temperature regime at the surface, I have heard being in the vicinity of -300 degrees (C or F?) have any bearing on all this?
    I enjoy passing time (/gas) contemplating the engineering challenges to terraform Titan, the biggest thing being getting sufficient Oxygen into the atmosphere to make it breathable, and warming it to where it would not instantly freeze dry an entire human body. Also, warming would arguably bring the pressure down considerably due to expansion ( I am guessing), so would warming the atmosphere by 300 degrees simply make it all blow away into space?

  • MarkCValdez

    Google is paying 80$ per hour! Work for few hours and have more time with

    friends & family! On tuesday I got a great new Land Rover Range Rover from

    having earned $4151 this last four weeks. Its the most-financialy rewarding I’ve

    had. It sounds unbelievable but you wont forgive yourself if you don’t check it…
    ——————————————————
    Here ­­­­­­­­­is ­­­­­­­­­I ­­­­­­­­­started,———-,, HuL­­­uJoB.­­­C­­­O­­­M

    —————————————————-

    GO TO THE SITE AND CLICK NEXT TAB FOR MORE INFO AND HELP

  • http://blogs.discovermagazine.com Michael Keener

    hornswoggle you say! so is your post…

  • sharongnewborn

    My Uncle
    Joshua just got an almost new white Kia Rio Hatchback only from working
    part-time off a home computer. try this R­e­x­1­0­.­C­O­M­

NEW ON DISCOVER
OPEN
CITIZEN SCIENCE
ADVERTISEMENT

Discover's Newsletter

Sign up to get the latest science news delivered weekly right to your inbox!

D-brief

Briefing you on the must-know news and trending topics in science and technology today.
ADVERTISEMENT

See More

ADVERTISEMENT
Collapse bottom bar
+

Login to your Account

X
E-mail address:
Password:
Remember me
Forgot your password?
No problem. Click here to have it e-mailed to you.

Not Registered Yet?

Register now for FREE. Registration only takes a few minutes to complete. Register now »