What time is it on the moon? How a lunar clock debate led to an out-of-this-world timepiece

What time is it on the moon? One wristwatch tried to answer that question, yet was largely forgotten by history.

What time is it on the moon? How a lunar clock debate led to an out-of-this-world timepiece
What time is it on the moon? One wristwatch tried to answer that question, yet was largely forgotten by history.