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Making sense of Mars' tiny moon Phobos
- June 22, 2026 at 11:40 PM
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Mars' innermost moon, Phobos, has long puzzled planetary scientists, who have continually debated whether it's a captured asteroid or formed from debris after a giant impactor struck the Martian surface. The key to solving the mystery mainly rests with a better understanding of Phobos' internal structure, which unfortunately remains a "known unknown."
Originally published at Phys.org