Geophysicists have modeled how Earth’s magnetic field could form even when its core was fully liquid. By removing the effects of viscosity in their simulation, they revealed a self-sustaining dynamo ...

A new study reveals that supernova explosions may have caused two mass extinctions on Earth 372 million and 445 million years ago by damaging the planet’s atmosphere and triggering climate shifts.

Space is filled with billions of stars, all of which will eventually reach the end of their life. For many of them, this means exploding in a very dramatic fashion. There are several ways that a star ...