Recent materials
Date
Popularity

Space
September 2, 2015
Observation of the D/H ratio in comets
Physicist Paul Hartogh on primordial materials, escape of the atmosphere, and the Giotto mission
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Space
February 9, 2015
D/H ratio in Solar System
Staff Member at Max Planck Institute for Solar System Research, Paul Hartogh, on the use of the deuterium/hydr...
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