Slashdot Mirror


Using Light's Handedness To Find Alien Life

Rational Egoist writes "Scientists working at the National Institute of Standards and Technology have come up with a novel, easy way to detect life on other planets. Rather than try to measure the composition of atmospheres, they want to look at the chirality of light coming from the planet. From the article: '"If the [planet's] surface had just a collection of random chiral molecules, half would go left, half right," Germer says. "But life's self-assembly means they all would go one way. It's hard to imagine a planet's surface exhibiting handedness without the presence of self assembly, which is an essential component of life."' And they have already built a working model: 'Because chiral molecules reflect light in a way that indicates their handedness, the research team built a device to shine light on plant leaves and bacteria, and then detect the polarized reflections from the organisms' chlorophyll from a short distance away. The device detected chirality from both sources.' The article abstract is available online."

12 of 210 comments (clear)

  1. One problem by eclectro · · Score: 5, Funny

    What if the aliens are ambidextrous?

    --
    Take the cheese to sickbay, the doctor should see it as soon as possible - B'Elanna Torres, "Learning Curve"
  2. raise your hand... by Kral_Blbec · · Score: 4, Funny

    if you had to google chirality

    1. Re:raise your hand... by Anonymous Coward · · Score: 1, Funny

      I'm fairly sure that the OP was making a 'handedness' joke.

    2. Re:raise your hand... by CRCulver · · Score: 2, Funny

      Not me. Four years of undergraduate Greek finally pays off!

    3. Re:raise your hand... by Hatta · · Score: 2, Funny

      Don't they cover this in the second semester of freshman chem?

      --
      Give me Classic Slashdot or give me death!
    4. Re:raise your hand... by eclectro · · Score: 4, Funny

      if you had to google chirality

      You know, it's when you open the door for ladies.

      --
      Take the cheese to sickbay, the doctor should see it as soon as possible - B'Elanna Torres, "Learning Curve"
  3. Aliens, we are coming! by MikeOtl67of · · Score: 2, Funny

    This sound very interesting. Maybe there are business opportunities with Aliens. What do you think they would be ready to buy from us? Maybe something to show an even distrubution of chiral molecules could avoid their friends on other planets to also get discovered by nasty sellers from Earth, but I am not sure we should sell such a thing. Any valid business idea?

  4. Very punny :P by Merakis · · Score: 4, Funny

    So, to sum up the article... Chirality is not dead!

  5. Re:Define "Short Distance" by aliquis · · Score: 3, Funny

    Smells of a "fund me, or PhD me" non-story.

    Also possible: "Buy my freaking huge flashlights!"

    Anyway, I guess a star would work as a light source to.

  6. Re:Wow by sFurbo · · Score: 2, Funny

    (really, outrageously Humongus sized) at one of the lagrange points.

    No, please don't give them any more stupid ideas for what to call large telescopes

  7. Re:Life Jim, but not as we know it! by 4D6963 · · Score: 2, Funny

    So, you have left handed gloves and right handed gloves, and you can't transform one into the other without doing something like flipping it through a fourth spatial dimension

    Little known fact : that's actually how right hand gloves are made. Turns out that using a fourth spatial dimension is cheaper than machinery to build both types of gloves.

    --
    You just got troll'd!
  8. Re:Wow by Theaetetus · · Score: 2, Funny

    (really, outrageously Humongus sized) at one of the lagrange points.

    No, please don't give them any more stupid ideas for what to call large telescopes

    Let's see...

    Freakish Array of Radio Telescopes?
    Stupidly Large Ultraviolet Telescope?
    Binary Interferometric Narrowband Telescope?
    Coordinated Unit of Networked Telescopes?