NASA SPACE ·Did Deadly Gamma-Ray Burst Cause a Mass Extinction on Earth? , A gamma-ray burst, the most powerful kind of explosion known in the universe, may have triggered a mass extinction on Earth within the past billion years, researchers say.

Nasa Discovery ,

Did Deadly Gamma-Ray Burst Cause a Mass Extinction on Earth?

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A gamma-ray burst, the most powerful kind of explosion known in the universe, may have triggered a mass extinction on Earth within the past billion years, researchers say.