Scientific American20h
The Arecibo Message, Earth’s First Interstellar Transmission, Turns 50
The Arecibo Message as it appears when its 1,679 bits are properly aligned on a grid (left), an annotated illustration ...
Findings from the first lunar far side samples raise new questions about the moon’s history
The first lunar samples from the moon’s far side differ in some interesting ways from those collected from the near side, ...