NASA’s Perseverance Rover Watches Earth Vanish Behind Martian Moon

Earth and the Martian moon Phobos dance together in a series of images recently acquired by NASA’s Perseverance Mars rover. Earth appears as a point of light in the Martian sky, disappearing behind the crescent of Phobos, the larger of Mars’ two moons. This is the first time humanity has captured from the surface of […]

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  1. Smallest Moons in the Solar System: Mars's moon Deimos, with a diameter of 12.6 km (7.8 mi), is among the smallest moons in the solar system, though even smaller moonlets have been discovered around Saturn and Jupiter.
  2. Top Theories on Phobos and Deimos's Origin: The leading theories suggest Mars's moons, Phobos and Deimos, are either captured asteroids or formed from debris ejected during a large impact on Mars.
  3. Phobos's Unique Appearance from Mars: From the Martian surface, Phobos appears about one-third the size of Earth's full Moon and exhibits the unusual behavior of rising in the west and setting in the east due to its rapid orbit.

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