Blisters When You Walk Higher Miles. Walking 10 miles (over 3 hours), even if you are used to walking for six miles, is more of a challenge. You can do it, but most people are likely to develop blisters in new places. Shoes and gear that worked fine for two hours may not be ideal for four hours.
How the Aurora Borealis occur. The Northern Lights are caused by the interaction of the solar wind - a stream of charged particles escaping the Sun - and our planet's magnetic field and atmosphere.
The amazing color displays and formations of the Northern Lights (also called aurora borealis) are produced by basically three things: 1. The solar wind - a continuous flow of the Sun's magnetic field carrying charged particles (electrons and protons) from the Sun's atmosphere far out into the solar system.