Ancient supernovas may have blasted Earth with powerful radiation, causing dramatic changes in our climate, and could do so ...

New research suggests that the explosive death throes of massive stars, known as supernovas, may have had dramatic effects on our planet's climate over ... and all life on Earth would perish.

When a star explodes, it sends high-energy particles out in all directions. This burst of energy can travel through space for ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that have never been completely explained, according to a theory put forward in new research.During the final stages of a ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Violent supernovas ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that have never been completely explained, according to a theory put forward in new research.During the final stages of ...

which are linked with supernovas and happen very rarely on Earth. Having this isotope in the Earth's history would be evidence that interstellar dust had influenced the climate millions of years ...