Perseverance Captures Another Phobos Transit

NASA's Curiosity Mars rover has made a significant discovery in a Martian valley known as Valle Grande, where it found a large field of polygonal fractures, commonly referred to as honeycomb-like textures. This discovery occurred on June 19 and 20, 2026, during the rover's 4,930th and 4,931st Martian days, or sols. The polygonal fractures measure approximately 1.5 to 3 inches (4 to 8 centimeters) across. This finding represents the first time such a vast expanse of these features has been documented in one location, as previous observations by Curiosity had only identified small patches of these geometric shapes. Curiosity captured a 360-degree panorama of this "sea of polygons," showcasing the unique terrain that spreads out in all directions. Project scientist Ashwin Vasavada expressed excitement about the discovery, noting that it provides new insights into the geological processes that shape the Martian surface. The presence of these polygonal fractures suggests a history of environmental conditions that may have contributed to their formation. This discovery adds to Curiosity's extensive catalog of geological features. The discovery of such a large area of polygonal fractures could help scientists better understand the climatic and geological history of Mars, as well as the processes that have shaped its landscape over time. The ongoing exploration by the rover continues to yield valuable data that enhances our understanding of the Red Planet. The findings from Curiosity are crucial for advancing knowledge about Mars and its environmental history, contributing to the broader understanding of the planet's geological and climatic evolution. In a separate event, NASA’s Perseverance Mars rover captured the silhouette of Phobos, one of Mars' moons, as it crossed in front of the Sun on August 12, 2026, during the 1,948th Martian day, or sol, of its mission. This event marks a significant achievement in documenting celestial phenomena from the surface of Mars. Phobos crosses the Martian sky three times a day, and the alignment of Earth and Phobos required careful planning and a bit of luck to capture. The ongoing exploration by both rovers continues to yield valuable data that enhances our understanding of Mars and its environmental history.