Experts say that rings around the moon can pop up from time to time, but have you ever seen one in Denver? Last night, at ...

Look more closely, though, and it’s easy to tell the difference. What is crystal? Crystal is a type of glass made with lead ...

"Why are there so many songs about rainbows?" sings Kermit the Frog in a song (about rainbows) called "Rainbow Connection" from 1979's "The Muppet Movie." And it's not just songs that feature rainbows ...

Choose from Heat Refraction stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video Back Videos home Signature collection Essentials ...

The Northwestern states in America often experience odd weather patterns due to the high altitude and bitterly cold ...

For the first time, scientists have demonstrated that negative refraction can be achieved using atomic arrays—without the ...

Scientists have found a way to achieve negative refraction—where light bends the "wrong" way—using carefully arranged atomic arrays instead of engineered metamaterials. This breakthrough has enormous ...

Curiosity, a set of NASA 's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying ...

Researchers have developed a novel experimental platform to measure the electric fields of light trapped between two mirrors ...

Hawaii’s regular sunshine, short rain showers and clean air come together to create some of the planet’s best conditions for viewing rainbows. They’re such a frequent sight that a University ...

HONOLULU (AP) — Hawaii’s regular sunshine, short rain showers and clean air come together to create some of the planet’s best conditions for viewing rainbows. They’re such a frequent sight ...