The Man Who Shot The Moon
b'NASA\'s Artemis Moon mission was supposed to launch Monday. But it was delayed due to a problem one of the rocket engines. When it launches, it will be a giant step towards sending humans back to the moon. We\'re eager to know: What leaps in scientific knowledge will be gained?
It\'s a question planted in our minds by the scientist Hal Walker, who led an experiment during the first lunar landing half a century ago. The goal: Beam a laser at the moon. This encore episode, Scientist in Residence Regina G. Barber talks to host Aaron Scott about the Lunar Laser Ranging experiment \\u2014 and how shooting that laser helped us better understand one of Einstein\'s theories.
Follow Aaron on Twitter @AaronScottNPR and Regina @ScienceRegina. Reach the show by beaming an email to ShortWave@NPR.org.
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