Life's Building Blocks Found in Young Star Dust

University College London

The mystery of how complex molecules essential to life first formed may have been solved by a new study involving UCL's Dr Paola Pinilla.

artist's impression of a dust trap

Planetary scientists believe that organic macromolecules that make Earth suitable for life, including elements such as carbon, nitrogen and oxygen, initially came from a type of meteorite known as a chondrite - but how chondrites acquired these molecules in the first place was unknown.

The study, published in the journal Nature Astronomy, used computer modelling to conclude that macromolecules could have formed in a short time in discs of dust around young stars.

The researchers found that intense starlight irradiating dust traps - areas where dust and ice accumulate in the disc - could have formed organic (carbon-containing) macromolecules in just a few decades.

  • Artist's impression of a dust trap. The dust trap provides a safe haven for small particles in the disk, allowing them to clump together and grow large enough to survive on their own. Credit: ESO/L. Calçada
  • Irradiated dust trap in a protoplanetary disc. AI generated, no copyright.
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