From oddly shaped clouds to rainbowlike colors in the sky, there are plenty of fascinating weather phenomena that can capture your attention, even when there's no storm in sight. Whether you're a ...

Light from the Sun ... rays are not parallel. A periscope uses two mirrors to allow someone to look over an obstacle. Submarines use periscopes to see ships on the surface of the sea.

Sunlight is plentiful on this remote Pacific island, which is a good thing because golden jellyfish don’t just enjoy basking in the sun—they need its light to survive. Solar rays nourish ...

While sunsets on Mars are uniquely moody, NASA 's Curiosity rover has captured a stunning image of a martian sunset, featuring light rays that illuminated a bank of clouds as the sun set over the ...