Perseverance rover captures Phobos transit across Sun on Aug 12 2026

NASA’s Perseverance rover recorded a rare astronomical event on August 12, 2026, when the Martian moon Phobos passed directly in front of the Sun. Using the rover’s Mastcam‑Z imaging system, the spacecraft captured the moon’s silhouette during the 1,948th Martian day (sol) of its mission, producing an animation that has been color‑tinted to approximate the visual experience of a human observer on the Red Planet. The observation marks the first time a surface‑based rover has imaged Phobos transiting the Sun, providing a unique dataset for calibrating models of Martian atmospheric scattering and refining orbital parameters of the moon.

The captured sequence adds to Perseverance’s suite of scientific activities, which include geology, climate studies, and preparation for future sample‑return missions. By documenting the timing and geometry of the transit, engineers can improve navigation algorithms for upcoming landers and rovers that will operate under similar lighting conditions. The animation, released by NASA, underscores the rover’s continued capability to contribute to planetary science beyond its primary objectives, and it sets a precedent for future observations of Phobos and Deimos from the Martian surface.