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. These deadly outbursts could ...

A huge cosmic explosion could have caused a mass extinction on Earth 450 million years ago, according to an analysis by scientists in the US. A gamma ray burst could have caused the Ordovician ...

Releasing more energy in one second than the sun will in its entire ten-billion-year-lifetime, gamma ray bursts are some of the universe’s most powerful phenomena. The energy is released in a focused ...

Until recently, I assumed that the term “extinction burst” referred to the impact of the comet, asteroid or other catastrophic space rock that wiped out the dinosaurs. Turns out the expression ...

SPACE can be a perilous place, offering an array of apocalyptic scenarios capable of causing mass extinction events on Earth. Here are the five most plausible ways human life faces cosmic annihilation ...