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Updated: Jul 13, 2026

Laboratory Drop Towers for the Experimental Simulation of Dust-aggregate Collisions in the Early Solar System

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Published on: June 5, 2014

Protocell formation on micrometeorites.

Aldo Jesorka^1,2, Esteban Pedrueza-Villalmanzo³, Ezgi Ciftcioglu²

¹GOMOD AB, Göteborg, Sweden.

Scientific Reports

|July 11, 2026

Summary

Lipids self-assemble on micrometeorites, forming protocell-like structures. These extraterrestrial particles may have aided early cell evolution through surface energy interactions.

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Published on: February 11, 2018

Area of Science:

Astrobiology
Origin of Life Studies
Geochemistry

Background:

Micrometeorites continuously deliver extraterrestrial material to Earth.
The role of extraterrestrial surfaces in the origin of life is largely unexplored.
Lipid self-assembly is a key process in protocell formation.

Purpose of the Study:

To investigate the self-assembly of lipids on micrometeorite surfaces.
To explore the potential of micrometeorites in primitive cell evolution.
To compare lipid behavior on micrometeorites versus terrestrial sand particles.

Main Methods:

Studied lipid self-assembly on natural micrometeorites.
Investigated lipid interactions with extraterrestrial particle surfaces.
Analyzed lipid compartment formation, including lipid nanotubes.
Compared lipid behavior on micrometeorites and terrestrial sand particles.

Main Results:

Lipids self-assembled into membranous protocells on micrometeorites.
Lipid-particle interactions were driven by surface energy, forming lipid nanotubes.
Certain lipid compositions showed a preference for micrometeorite surfaces over sand.
Lipid nanotubes on micrometeorites transported lipid particles and connected to other environmental objects.

Conclusions:

Micrometeorites can act as scaffolds for protocell formation via lipid self-assembly.
Surface properties of extraterrestrial particles influence lipid behavior and organization.
This process offers a plausible mechanism for early cell evolution driven by surface energy.