GoKawiilUC Riverside study: Venus may have absorbed its own moon via slow rotation
Researchers at the University of California, Riverside modeled how Venus' extremely slow rotation—243 Earth days per spin—combined with its gravity could have gradually dragged a hypothetical moon inward until it broke apart and was absorbed by the planet. Lead author Steven Kane says this process wouldn't have required a catastrophic collision, contradicting an earlier theory that Venus' moon was destroyed by an impact with another body. The team built a computer simulation of gravitational interactions to test this mechanism.