Venus: Not So Different From Earth after All?
Venus, often dubbed Earth’s “sister planet,” has long been considered an inhospitable world. Its surface temperature soars to approximately 475 degrees Celsius. The atmospheric pressure is about 92 times greater than Earth’s, akin to the crushing depths nearly one kilometer under the sea. The Venusian atmosphere is primarily carbon dioxide, shrouded in thick clouds of sulfuric acid, creating corrosive acid rain.
A Geological Awakening
Contrary to previous assumptions, a recent study published in Science Advances suggests venus may share more similarities with Earth than previously thought.this revelation stems from re-analyzing data collected by NASA’s Magellan spacecraft in the early 1990s.
magellan used radar to map nearly 98% of Venus’s surface, as visible light cannot penetrate the planet’s dense atmosphere. Scientists focused on giant geological features known as Coronae, large circular structures on the Venusian surface.
Coronae: Windows into Venus’s Interior
Initially,researchers believed Coronae were impact craters formed by meteorite collisions. Though, further analysis revealed that Coronae are the result of volcanic activity.
This finding indicates that Venus is not entirely geologically dead
as previously assumed. Coronae, Latin for “crown,” are characterized by a large, circular shape with a collapsed center and concentric cracks radiating from the center.
These structures can span hundreds of kilometers in diameter and are believed to form when hot material from the planet’s interior rises, a process called mantle Plume.
This phenomenon pushes the surface upward, creating a dome-like structure. The dome then collapses inward, and lava seeps out, forming a distinctive ring.
Active Mantle Plumes: Evidence of Ongoing Activity
The research team developed a computer model to understand how hot plumes create Coronae. They compared the model’s results with gravity and topographic data from the Magellan mission.
The results were compelling. Of the 75 Coronae analyzed,52 showed evidence of being above structures indicating active plumes,with hot,molten material still rising from the planet’s depths. This suggests that geological activity on Venus is ongoing.
This shows that the geological activity in venus is still ongoing today.
Venusian Dynamics: A Different Kind of Tectonics
While Earth boasts a tectonic plate system, where the planet’s crust moves, collides, and subducts, creating earthquakes, mountains, and recycling crustal materials, Venus does not exhibit signs of an active plate tectonic system. though, it still displays significant internal dynamics.
Venus,although it does not show signs of active tectonic plate system,apparently still shows significant internal dynamics.