This is the first image of the first ever man-made radio
signal being transmitted from interstellar space.
A powerful NASA telescope has found not one, but 10
supermassive black holes. And it did so by accident! Trace explains what
exactly black holes are and why the discovery is so awesome.
In the early space age, even before President Kennedy kicked
off the race to the moon, the United States and the Soviet Union had
begun exploring our closest planetary neighbors.
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