Observations made by the Magellan spacecraft in the 1990s include signs of recent lava flows, highlighting possible exploration targets for probes heading to Venus in the 2030s
Recent lava flows spotted on Venus suggest the planet could be much more geologically active than first thought, possibly as active as Earth.
They found variations in brightness from the reflected radar signal over time, which suggests there are areas of material that have expanded, most likely from moving lava flows.To confirm this explanation, Sulcanese and his team had to rule out others, such as atmospheric interference or the spacecraft accidentally changing its intended observation angle, as Magellan only captured the same area once every eight months.
Sulcanese and his team also used these figures to estimate the total volcanic activity on Venus. “According to this estimate, Venus could be far more volcanically active than expected,” says Sulcanese, being the same order of magnitude as Earth’s total rate of volcanic activity.
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