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Galactic controls

Artists impression of the Milky Way viewed along its axis. Image via Wikipedia Palaeoclimatologists are quite content that an important element in controlling the vagaries of climate is due to...

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Dust: heating or cooling?

Mars: with and without dust storms in 2001. Image via Wikipedia Once every 13 years on average dust blots out most of the surface of Mars turning it into an orange ball. The last such planet-encircling...

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Tectonics of the early Earth

Tectonics on any rocky planet is an expression of the way heat is transferred from its deep interior to the surface to be lost by radiation to outer space. Radiative heat loss is vastly more efficient...

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What followed the Giant Impact (read Lord Mayor’s Show)?

The dominance of the Lunar Highlands by feldspar-rich anorthosites, which form when feldspars that crystallise from magmas float because of their lower density, gave rise to the idea that the Moon...

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