Amy Fish reports that space dust may hold the key to life in outer space.
GELLERMAN: Just ahead: will petroleum companies put a damper on birds’ party central in Alaska’s North Slope? First this Note on Emerging Science from Amy Fish.
FISH: Ashes to ashes, dust to dust. That’s what the Book of Common Prayer says about life on earth. Now scientists say, this same message may be a hint to life in outer space.
FISH: Scientists from Russia, Germany, and Australia have discovered the surprisingly life-like qualities of an inorganic substance called plasma dust. As the name suggests, the dust is found in plasma—a fourth state of matter so super-hot, its atoms have broken apart. Plasmas are found in stars and outer space. The researchers say that the solid, electrically charged particles of plasma dust seem to act a lot like DNA—a building block of life here on earth.
Inside a plasma, the dust can form corkscrew structures similar to a DNA double helix. And just like DNA, the dust structures can replicate: they divide to make two copies of the original. They can even evolve. It’s sort of an inorganic version of survival of the fittest. The strongest shapes take in surrounding dust particles and reproduce, while the weaker ones die off.
Until now, researchers have looked for extraterrestrial life based only on organic carbon compounds. But this life-like dust contains no carbon.
So, there may be life out there after all—just not as we know it. That’s this week’s note on Emerging Science. I’m Amy Fish.
GELLERMAN: And you’re listening to Living on Earth.
Living on Earth wants to hear from you!
P.O. Box 990007
Boston, MA, USA 02199
Donate to Living on Earth!
Living on Earth is an independent media program and relies entirely on contributions from listeners and institutions supporting public service. Please donate now to preserve an independent environmental voice.
Sailors For The Sea: Be the change you want to sea.
Innovating to make the world a better, more sustainable place to live. Listen to the race to 9 billion
The Grantham Foundation for the Protection of the Environment: Committed to protecting and improving the health of the global environment.
Energy Foundation: Serving the public interest by helping to build a strong, clean energy economy.
Contribute to Living on Earth and receive, as our gift to you, an archival print of one of Mark Seth Lender's extraordinary wildlife photographs. Follow the link to see Mark's current collection of photographs.
Buy a signed copy of Mark Seth Lender's book Smeagull the Seagull & support Living on Earth