(Source: National Public Radio)

Dot

Dash

Dot

Dash

This is the moon as Morse code.

[…]All over the world, ham radio operators and Morse Code enthusiasts beam dot, dash messages straight at the moon, then wait 2.7 seconds for the signal to bounce back. They call these “E.M.E.” transmissions, which stands for “Earth-Moon-Earth” or — more popularly — “moonbouncing.” I suppose it’s fun to smack little beeps against a sleepy rock 239,000 miles away and have those beeps come flying back at you. Plus, it’s easy.

[…]Not so long ago, a Scottish artist, Katie Paterson, turned Beethoven’s Moonlight Sonata into Morse code, (yup, you can do that, too) and bounced it off the moon. Some musical phrases got trapped in moon craters and didn’t come back, which she found so intriguing, she put the ricocheted, fragmented Moonlight Sonata on a player piano and you can now see her MoonBounced, Morse-Coded piece being not performed by anyone, the keys going up and down on their own, on YouTube.