Moons
Astronomers identified over 100 previously unknown moons in our solar system during 2025, including dozens around Saturn and a new one orbiting Uranus. These findings, made using advanced telescopes, highlight ongoing mysteries in planetary formation. Experts suggest many more such satellites remain to be found.
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Sedimentary rocks in Mars' Gale crater suggest the planet once had a much larger moon capable of generating tides in its ancient lakes. Researchers analyzed layered formations imaged by NASA's Curiosity rover, proposing this moon was 15 to 18 times the mass of current moon Phobos. While the idea revives tidal theories, some experts question whether the small crater lakes could support such activity.