The day a signal came from space – level 2
On August 15, 1977, American astronomer Jerry Ehman looked at the information from a telescope in Ohio. He saw something fantastic. He saw a signal which looked like a signal from space.
The signal was 72 seconds long, and it was thirty times stronger than the normal sound of space. Scientists believed very strongly that the signal was really from space.
What or who sent this signal? It was unclear. Other big and powerful telescopes later searched for the source of the signal, but nobody recorded the same signal again.
The signal from 1977 is still an unexplained mystery.
What could have caused the extraordinary signal seen by Jerry Ehman in 1977?
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