How fast can a galaxy build ordered magnetic fields spanning thousands of light-years? Existing theories say several billion ...

A glorious swooping downhill glide on one of these electric mountain bikes will make you feel like a kid again.

Some bikes can harness the wind to make you faster, but what exactly does that mean, and how does the sail effect work?

New observations are helping scientists peer beneath the Sun’s surface, revealing where its magnetic activity may truly begin. Every 11 years, the Sun’s magnetic field reverses. As that cycle unfolds, ...