Apollo 17 astronaut collecting moon samples (IMAGE)

University of Arizona

Apollo 17 astronaut collecting moon samples

Caption

More than 50 years ago, Apollo astronauts brought basaltic lava rocks back from the moon with surprisingly high concentrations of titanium. Later, satellite observations found that these titanium-rich volcanic rocks are primarily located on the moon's nearside - but how and why they got there has remained a mystery – until now.

Credit

NASA

Usage Restrictions

No restrictions.

License

Public Domain

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