Venus5 min read
How radar tests the case for active volcanoes on Venus
Magellan’s images support a remarkable search for volcanic change. A continuing dispute shows why geometry, shape, and topography must travel with the headline.
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Volcanology7 min read
Reading the bubbles in volcanic glass
Vesicles preserve traces of gas leaving magma, but growth, merger, flow and the cut of a specimen all change the pattern a reader sees.