Cell phones are unreliable in the Colorado backcountry due to potential signal issues and battery life, but in a pinch one might save your life.

In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.

What started as a simple habit of saving favorite spots has turned Google Maps into my ultimate city guide. By creating ...

While plenty of people take to the roadways every day, some roads are far more unique than others. While some have terrifying levels of traffic, this mountain pass may be one of the most nerve-racking ...

The comets A6 (Lemmon) and R2 (SWAN) are visitors from the chilly fringes of our solar system, and could even be visible at ...