🔬 Discovery

Synthesis of tholins

Síntesis de tolinas

Date
1979 · confidence high
Place
Cornell University, Ithaca, New York, United States
Credited to
Carl Sagan and Bishun Khare
Field
Matter & energy

What was discovered

Sagan and Khare irradiated gas mixtures such as methane, ethane and nitrogen with electrical discharges and ultraviolet light, obtaining complex reddish organic solids they named "tholins", mimicking the chemistry of Titan's atmosphere.

The Miller–Urey experiment (1952) is not yet in the catalogue under that exact name; referenced here as a conceptual precursor.

What it led to

  • Chemical model of Titan's atmosphere and surface
  • Search for tholins on Pluto, comets and other icy bodies
  • Boost to astrobiology and prebiotic chemistry

Built on

  • Miller–Urey experiment

Links

Sources✓ verified 2026-09-28