Moon's Magnetic Mystery Solved: Titanium-Rich Rocks Hold the Key

• Apollo missions found Moon rocks with evidence of an ancient magnetic field as strong as Earth's, despite the Moon having almost no field today.
• Oxford University research reveals titanium content is crucial: titanium-rich rocks recorded much stronger ancient magnetism.
• Scientists propose episodic bursts of strong magnetism were caused by melting titanium-rich material deep inside the Moon, near the core-mantle boundary.
• These temporary events increased heat outflow from the core, driving a stronger magnetic field for several thousand years, like a "cosmic lighthouse."
• This debunks the long-held belief of a constant, strong lunar magnetic field, suggesting Apollo samples captured rare, intense spikes.