First Evidence of Subsurface Lava Tube Discovered on Venus

Scientists have identified a subsurface lava tube on Venus, marking the first confirmed detection of such a feature on the planet. The discovery was made by analyzing radar data from NASA's Magellan mission, which mapped Venus's surface in the early 1990s.

The research team, led by Lorenzo Bruzzone from the University of Trento, focused on the Nyx Mons region, a volcanic area on Venus. They detected a surface collapse, known as a skylight, which revealed the presence of an underground cavity. This cavity is interpreted as a lava tube, with an estimated diameter of approximately one kilometer and a roof thickness of at least 150 meters.

Bruzzone emphasized the significance of this finding, stating,

"Until now we have never had the opportunity to directly observe processes occurring beneath the surface of Earth's twin planet. The identification of a volcanic cavity is therefore of particular importance, as it allows us to validate theories that for many years have only hypothesized their existence."

The study suggests that Venus's lower gravity and denser atmosphere compared to Earth may facilitate the formation of larger lava tubes. The identified structure appears to be wider and taller than those observed on Earth or predicted for Mars, aligning with Venus's known extensive lava channels.

This discovery contributes to a deeper understanding of Venus's geological evolution and opens new avenues for future research. Upcoming missions, such as the European Space Agency's EnVision and NASA's VERITAS, equipped with advanced radar systems, are expected to provide higher-resolution data to further investigate Venus's subsurface structures.