Scientists have re-examined data from NASA’s Magellan mission, launched over three decades ago, and found fresh clues indicating that Venus may still be geologically active. The research team discovered large, oval-shaped formations called coronae on the planet’s surface, which could point to ongoing tectonic activity.
These features were first observed in the 1990s, but researchers have now used advanced data analysis techniques to better understand their origins and significance. By combining gravity and topography data, scientists have found that 52 of the 75 coronae studied show signs of hot, buoyant mantle material underneath.
This suggests that Venus’ surface is not as quiet as previously thought, and that tectonic processes may still be at work. The team proposes several possible mechanisms for corona formation, including subduction, lithospheric dripping, and volcanic activity.
The discovery has significant implications for our understanding of Venus’ geology and its potential connection to the early days of Earth. NASA’s upcoming VERITAS mission is expected to provide even more detailed data on the planet’s surface composition, gravity field, and internal structure.
While the findings are intriguing, they also highlight the challenges of studying Venus due to its extreme environment and lack of plate tectonics. Nevertheless, continued research efforts may finally uncover more secrets about this enigmatic planet.
Source: https://www.earth.com/news/is-venus-alive-new-signs-of-volcanic-activity-emerge