Ancient supernovas may have blasted Earth with powerful radiation, causing dramatic changes in our climate, and could do so again, posing a threat to life.

A new study has raised intriguing possibilities about the role of supernovae in shaping the evolution of life on Earth. Researchers from UC Santa Cruz, led by Caitlyn Nojiri, have discovered traces of ...

For billions of years, Earth has been bombarded by tiny particles of rock and metal from space. When these extraterrestrial ...

Scholz's star illustrates the risk of stellar flybys. Scientists have wondered if these flybys have affected Earth's climate in the past by altering the planet's orbit.