Kayaking in glowing waters is a hot, new travel trend. Here's a collection of destinations in America to scope out the ...

Examples from astronomy can make vivid any general discussion of gravity and forces, of nuclear energy, of light and color ... and the consensus is that doing activities and discovering ideas ...

Before you head outside at night, make sure you have all the right gear on your to complete your tasks safely.

Light helps us to see the world around us. When you go to sleep at nighttime and you switch off all the lights, it is usually dark. Darkness is when there is no light or the light is blocked.

The universe tells us its story mainly through light and other wavelengths of electromagnetic ... of stars are scattered through the great dark ocean of space. In this sense, astronomy is mostly ...