Produced by: Tarun Mishra Designed by: Manoj Kumar
A recent study by scientists at the University of Hawaii has revealed that methane gas may be trapped under a thick crust on Saturn’s largest moon, Titan. Researchers observed unusually shallow impact craters, hinting at a unique feature on Titan’s surface.
Titan’s impact craters, which are notably hundreds of meters shallower than similar craters on other moons, suggest that methane clathrate—a methane and water-based ice—could be influencing crater depth and structure.
By employing computer simulations, scientists estimate that Titan’s methane-rich crust is between five to ten kilometres thick. This thickness best aligned with the observed crater depths, providing a possible explanation for the shallow craters.
Credit NASA
Methane clathrate on Titan could offer insight into the moon’s carbon cycle and atmospheric changes, which may hold key clues about Titan’s potential for supporting life.
The study suggests that if life exists in Titan’s subsurface ocean, biomarkers could be transported upward through the ice shell due to convective processes. These markers could be more accessible to future missions.
Credit :NASA
Similar methane hydrates exist on Earth, found in Siberian permafrost and below Arctic ocean floors. Understanding these Earthly deposits helps scientists better predict Titan’s methane-based geology.
Titan’s atmosphere—rich in nitrogen and dense enough to allow a person to walk without a pressure suit—makes it a standout among celestial bodies. However, temperatures of -179°C mean that an oxygen mask and thermal protection are essential for any future explorers.